I am having problems with my z axis configuration and it is hitting the top of the unit. The configuration is messed up.
As part of the solution I am thinking of robbing the pin for my a axis slaved motor to the y axis which already has a switch. Currently I have
pin 10 to Emergency switch,
pin 11 to Y axis,
pin 12 to A axis which is slaved to X
pin 13 to X axis
pin 15 is to probe.

On my parallel controller I am out of points now.
Wouldn't it be better to have the Z limit for homing by moving it to pin used for A (Pin 12)?
The Gantry seems to track fine and not even sure the Gantry uses the second limit to home with as a slave configuration.