diff --git a/src/machi_cr_client.erl b/src/machi_cr_client.erl
index 09ef18d..ce30722 100644
--- a/src/machi_cr_client.erl
+++ b/src/machi_cr_client.erl
@@ -372,7 +372,7 @@ do_append_midtail(_RestFLUs, Prefix, File, Offset, Chunk, ChunkExtra,
 do_append_midtail2([], _Prefix, File, Offset, Chunk,
                    _ChunkExtra, _Ws, _Depth, _STime, S) ->
     %% io:format(user, "ok!\n", []),
-    {reply, {ok, {Offset, iolist_size(Chunk), File}}, S};
+    {reply, {ok, {Offset, chunk_wrapper_size(Chunk), File}}, S};
 do_append_midtail2([FLU|RestFLUs]=FLUs, Prefix, File, Offset, Chunk,
                    ChunkExtra, Ws, Depth, STime,
                    #state{epoch_id=EpochID, proxies_dict=PD}=S) ->
@@ -828,3 +828,8 @@ sleep_a_while(1) ->
     ok;
 sleep_a_while(Depth) ->
     timer:sleep(30 + trunc(math:pow(1.9, Depth))).
+
+chunk_wrapper_size({_TaggedCSum, Chunk}) ->
+    iolist_size(Chunk);
+chunk_wrapper_size(Chunk) ->
+    iolist_size(Chunk).
diff --git a/src/machi_flu1.erl b/src/machi_flu1.erl
index 3927a01..cbd4242 100644
--- a/src/machi_flu1.erl
+++ b/src/machi_flu1.erl
@@ -75,7 +75,6 @@
 -include_lib("kernel/include/file.hrl").
 
 -include("machi.hrl").
--include("machi_pb.hrl").
 -include("machi_projection.hrl").
 
 -define(SERVER_CMD_READ_TIMEOUT, 600*1000).
@@ -348,7 +347,12 @@ net_server_loop(Sock, #state{flu_name=FluName, data_dir=DataDir}=S) ->
                     ok = gen_tcp:send(Sock, <<"OK\n">>),
                     ok = inet:setopts(Sock, [{packet, 4},
                                              {packet_size, 33*1024*1024}]),
-                    protocol_buffers_loop(Sock, S);
+                    {ok, Proj} = machi_projection_store:read_latest_projection(
+                                   S#state.proj_store, private),
+                    Ps = [P_srvr ||
+                             {_, P_srvr} <- orddict:to_list(
+                                              Proj#projection_v1.members_dict)],
+                    machi_pb_server:run_loop(Sock, Ps);
                 _ ->
                     machi_util:verb("Else Got: ~p\n", [Line]),
                     io:format(user, "TODO: Else Got: ~p\n", [Line]),
@@ -1015,21 +1019,6 @@ http_harvest_headers({ok, Hdr}, Sock, Acc) ->
     http_harvest_headers(gen_tcp:recv(Sock, 0, ?SERVER_CMD_READ_TIMEOUT),
                          Sock, [Hdr|Acc]).
 
-protocol_buffers_loop(Sock, S) ->
-    case gen_tcp:recv(Sock, 0) of
-        {ok, Bin} ->
-            R = do_pb_request(catch machi_pb:decode_mpb_request(Bin)),
-            %% R = #mpb_response{req_id= <<"not paying any attention">>,
-            %%                   generic=#mpb_errorresp{code=-6,
-            %%                                          msg="not implemented"}},
-            Resp = machi_pb:encode_mpb_response(R),
-            ok = gen_tcp:send(Sock, Resp),
-            protocol_buffers_loop(Sock, S);
-        {error, _} ->
-            (catch gen_tcp:close(Sock)),
-            exit(normal)
-    end.
-
 digest_header_goop([], G) ->
     G;
 digest_header_goop([{http_header, _, 'Content-Length', _, Str}|T], G) ->
@@ -1049,68 +1038,3 @@ split_uri_options(OpsBin) ->
          [<<"size">>, Bin] ->
              {size, binary_to_integer(Bin)}
      end || X <- L].
-
-do_pb_request(#mpb_request{req_id=ReqID,
-                           echo=#mpb_echoreq{message=Msg}}) ->
-    #mpb_response{req_id=ReqID,
-                  echo=#mpb_echoresp{message=Msg}};
-do_pb_request(#mpb_request{req_id=ReqID,
-                           auth=#mpb_authreq{}}) ->
-    #mpb_response{req_id=ReqID,
-                  generic=#mpb_errorresp{code=1,
-                                         msg="AUTH not implemented"}};
-do_pb_request(#mpb_request{req_id=ReqID,
-                           append_chunk=AC=#mpb_appendchunkreq{}}) ->
-    #mpb_appendchunkreq{placement_key=____PK,
-                        prefix=Prefix,
-                        chunk=ChunkBin,
-                        csum=#mpb_chunkcsum{type=CSumType, csum=CSum},
-                        chunk_extra=ChunkExtra} = AC,
-    TaggedCSum = case CSumType of
-                     'CSUM_TAG_NONE' ->
-                         C = machi_util:checksum_chunk(ChunkBin),
-                         machi_util:make_tagged_csum(server_sha, C);
-                     'CSUM_TAG_CLIENT_SHA' ->
-                         machi_util:make_tagged_csum(client_sha, CSum)
-                 end,
-    Chunk = {TaggedCSum, ChunkBin},
-    case (catch machi_cr_client:append_chunk(todo_fixme,
-                                             Prefix, Chunk)) of
-        {ok, {Offset, Size, File}} ->
-            make_append_resp(ReqID, 'OK',
-                             #mpb_chunkpos{offset=Offset,
-                                           chunk_size=Size,
-                                           file_name=File});
-        {error, bad_arg} ->
-            make_append_resp(ReqID, 'BAD_ARG');
-        {error, wedged} ->
-            make_append_resp(ReqID, 'WEDGED');
-        {error, bad_checksum} ->
-            make_append_resp(ReqID, 'BAD_CHECKSUM');
-        {error, partition} ->
-            make_append_resp(ReqID, 'PARTITION');
-        _Else ->
-            make_error_resp(ReqID, 66, io_lib:format("err ~p", [_Else]))
-    end;
-do_pb_request(#mpb_request{req_id=ReqID}) ->
-    #mpb_response{req_id=ReqID,
-                  generic=#mpb_errorresp{code=66,
-                                         msg="Unknown request"}};
-do_pb_request(_Else) ->
-    #mpb_response{req_id= <<>>,
-                  generic=#mpb_errorresp{code=67,
-                                         msg="Unknown PB request"}}.
-
-make_append_resp(ReqID, Status) ->
-    make_append_resp(ReqID, Status, undefined).
-
-make_append_resp(ReqID, Status, Where) ->
-    #mpb_response{req_id=ReqID,
-                  append_chunk=#mpb_appendchunkresp{status=Status,
-                                                    chunk_pos=Where}}.    
-
-make_error_resp(ReqID, Code, Msg) ->
-    #mpb_response{req_id=ReqID,
-                  generic=#mpb_errorresp{code=Code,
-                                         msg=Msg}}.    
-    
diff --git a/src/machi_pb_high_client.erl b/src/machi_pb_high_client.erl
index 7c62e44..6529bca 100644
--- a/src/machi_pb_high_client.erl
+++ b/src/machi_pb_high_client.erl
@@ -215,7 +215,8 @@ do_send_sync({append_chunk, PlacementKey, Prefix, Chunk, CSum, ChunkExtra},
         {ok, Bin1B} = gen_tcp:recv(Sock, 0),
         case (catch machi_pb:decode_mpb_response(Bin1B)) of
             #mpb_response{req_id=ReqID, append_chunk=R} when R /= undefined ->
-                {R, S#state{count=Count+1}};
+                Result = convert_append_chunk_resp(R),
+                {Result, S#state{count=Count+1}};
             #mpb_response{req_id=ReqID, generic=G} when G /= undefined ->
                 #mpb_errorresp{code=Code, msg=Msg, extra=Extra} = G,
                 {{error, {Code, Msg, Extra}}, S#state{count=Count+1}}
@@ -225,4 +226,18 @@ do_send_sync({append_chunk, PlacementKey, Prefix, Chunk, CSum, ChunkExtra},
             {Res, S#state{count=Count+1}}
     end.
 
+convert_append_chunk_resp(#mpb_appendchunkresp{status='OK', chunk_pos=CP}) ->
+    #mpb_chunkpos{offset=Offset, chunk_size=Size, file_name=File} = CP,
+    {ok, {Offset, Size, File}};
+convert_append_chunk_resp(#mpb_appendchunkresp{status='BAD_ARG'}) ->
+    {error, bad_arg};
+convert_append_chunk_resp(#mpb_appendchunkresp{status='WEDGED'}) ->
+    {error, wedged};
+convert_append_chunk_resp(#mpb_appendchunkresp{status='BAD_CHECKSUM'}) ->
+    {error, bad_checksum};
+convert_append_chunk_resp(#mpb_appendchunkresp{status='PARTITION'}) ->
+    {error, partition};
+convert_append_chunk_resp(#mpb_appendchunkresp{status='BAD_JOSS'}) ->
+    throw({error, bad_joss_taipan_fixme}).
+
 
diff --git a/test/machi_pb_high_client_test.erl b/test/machi_pb_high_client_test.erl
index dce1395..73b35a5 100644
--- a/test/machi_pb_high_client_test.erl
+++ b/test/machi_pb_high_client_test.erl
@@ -37,6 +37,7 @@ smoke_test2() ->
     Port = 5720,
     Ps = [#p_srvr{name=a, address="localhost", port=Port, props="./data.a"}
          ],
+    D = orddict:from_list([{P#p_srvr.name, P} || P <- Ps]),
     
     [os:cmd("rm -rf " ++ P#p_srvr.props) || P <- Ps],
     {ok, SupPid} = machi_flu_sup:start_link(),
@@ -45,6 +46,7 @@ smoke_test2() ->
              #p_srvr{name=Name, port=Port, props=Dir} = P,
              {ok, _} = machi_flu_psup:start_flu_package(Name, Port, Dir, [])
          end || P <- Ps],
+        ok = machi_chain_manager1:set_chain_members(a_chmgr, D),
         [machi_chain_manager1:test_react_to_env(a_chmgr) || _ <-lists:seq(1,5)],
 
         {ok, Clnt} = ?C:start_link(Ps),
@@ -61,7 +63,15 @@ smoke_test2() ->
             PK = <<>>,
             Prefix = <<"prefix">>,
             Chunk1 = <<"Hello, chunk!">>,
-            yo = ?C:append_chunk(Clnt, PK, Prefix, Chunk1, none, 0),
+            {ok, {Off1, Size1, File1}} =
+                ?C:append_chunk(Clnt, PK, Prefix, Chunk1, none, 0),
+            Chunk2 = "It's another chunk",
+            CSum2 = {client_sha, machi_util:checksum_chunk(Chunk2)},
+            {ok, {Off2, Size2, File2}} =
+                ?C:append_chunk(Clnt, PK, Prefix, Chunk2, CSum2, 1024),
+            %% Chunk3 = ["This is a ", <<"test,">>, 32, [["Hello, world!"]]],
+            %% {ok, {Off3, Size3, File3}} =
+            %%     ?C:write_chunk(Clnt, File2, Off2+iolist_size(Chunk2), Chunk3),
 
             ok
         after