Dave Smith Instruments SYNTHESIZERS

I think this should work, however the Mopho goes crazy when I use Midi Thru. 

Here's my setup: MPC 1000 Midi Out ----> MOPHO Midi In ------> Mopho Midi Thru -----> Micron Midi In ------> Micron Midi Thru -----> Machindrum Midi In ---------> Machinedrum Midi thru ------> Evolver Midi In -------> Evolver Midi thru ----> MPC 1000 Midi In.

For some reason this makes the Mopho go wild, changing programs and hitting more Midi notes then the MPC 1000 JJOSXL2 locks up so I cannot do a Midi handshake on two different synths 

If my setup is as such: 
MPC 1000 MIdi Out A----> Mopho Midi In
Mpc 1000 Midi Out B -----> Micron Midi In ------> Micron Midi Thru -----> Machindrum Midi In ---------> Machinedrum Midi Out ------> Evolver Midi In 

then everything goes just fine. There is no crazy program switching on the Mopho. Anyone else experience something like this before?