Hello all. I have a fineline automation cnc router with a gecko 540 ESS warp9 smooth stepper and I finished my build however my y axis does not repeat. When cutting around a rectangle the X is fine but the Y loses about .05 per pas but not on a constant basis. I have Mach 4 set at 1735 steps per with velocity of 400 and accel of 25. My machine had linear guides and a rack and pinion. I'm lost and any help would be greatly appreciated

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