Thank you for the reply. Sounds like I am over complicating things. lol So I just program the mkiii on channel 1 for whatever preset selected on the max then go to channel 2 and select the preset for the core. In essence using two midi commands for each patch if it involves both H9s? What would the core’s output be set to or that wouldnt matter since it’s not passing anything thru?

If I got that right seems pretty simple  lol

Thank you