We have been running tests all day. We have a ratio of 2.5:1 now. We have been playing with switching between the two drives. We just ran a test with the y and z swaped and without the spindle mounted up and it ran ok however we then ran the same test with the spindle mounted and it tripped the same driver however that driver is on the y axis so looks like it may bea setting in the driver? With a posable link to something else?