Hi,
the only thing I can think of is that the Z axis is not fast enough.
If I understand correctly the G32 move is a linear co-ordinated move between the spindle an the Z axis. If you specify a thread of 1.75mm pitch for example, and the
spindle is rotating at 500 rpm then the Z axis must travel at 875mm/min. Could it be that the Z axis can't go fast enough do to the motor speed limit or some fault
of either Mach4 or the plugin? According to the Mach Lathe Gcode Manual the feed rate override is ignored when G32 is in operation. Lets say for arguments sake that
it is in fact enacted and the Z axis can only travel 500mm/min with an effective thread pitch of 1mm.
Craig