Ok I'm thinking better now.
A TR on remote is what you set each tpc' I'd numbers to respond to as in tr-1 will connect that tpc to whatever track/ block I'd number you assingned to it on the bpc in your case it's tr-1 bpc track/ block 1 correct?
So the second tpc should be connected to the other handle of zw and the other tpc 300 will be addressed as tr-2 here comes the part I'm not sure you can do this.
Is splitting only 2 each bpc track blocks to two separate zw handles.
on remote push Tr now on keypad push 1 now on remote lower area push the m on remote this selects conventional operation now push accessory button on remote then hit 1 on keypad now push aux 1 and then push the 1 again on keypad this assigns tr-1 to block/ track 1 to tr 1 only now do same steps above except replace the 1 on keypad with the 3 on keypad so both are now controlled by tpc tr1 and it's handle.
You said you tried tr3&4 but you don't have a third or fourth tpc.
Think of bpc like this bpc has 4 track outputs
numbered1-2-3-4
Each is addressed as an accessory on the remote you address each track number then aux 1 then either push the 1 on keypad which connects that output to the tr1 only or you can push the 2 on remotes keypad and it will connect the tr-2 to that output only does this make sense to you best I can explain it.
