Dave
Yes that was the right place to reverse motor direction. Had not noticed that before.
As I said in the first post this half built machine up to now only has two motors, both driving the X from both sides.
However in response to your request I tried those two motors in every combination I could by
plugging them into the Pod as X, Y, Z, A, B. and C
Every time slaving would not work and with slaving deselected each motor would jog perfectly as an individual.
Could it be a noise issue? Wiring is physically separated but not shielded.
As signal should be identical when slaved it would not be a problem. Wouldn't it.
I spose if slaving is working for everyone else then something like that may explain it.