I am having an issue with my Shapeoko Pro where after I set the x, y, and z zero on the piece ofwod I am going to cut. Then, when it moves to measure the bit immediately after, the last inch or so of the x direction sounds like it stutters real hard before it gets to the sensor. Then it measures and returns to the x and y zero position. However, I noticed that the y location was off, so I re-zero it and it was off by 3.996mm. When I set x,y, and z to zero again, it will go to measure the bit without problem and the x, y, and z will be accurate. But, EVERY time I set it up for a cut and zero it, the first time it measures the bit, it always stutters and then the y is off by +3.996mm.
Prior to this happening, I had just replaced all 3 of my belts and oiled the machine. After doing all that, I ran a 4"x4" test square, which was off by about 0.1", so I had to recalibrate the x and y distances and now the sizing is accurate, but this is when the stuttering all started. Any help would be greatly appreciated.