Weird offsetting issue

[slugbutter]

I have 2 Pro2 pluses and a pro2. One of the pluses works fine. Until recently, the pro2 standard also worked fine. Now it has these odd xy shifts happening constantly during the print. I’ve tried multiple models and they’re all models that print fine on the plus. When doing the perimeter, there will be a weird xy shift which keeps happening while printing the infill rows. The shift doesn’t always occur in the same place but it will be consistent for several rows, then shift elsewhere and be consistent for a few more rows. Sometimes it even overlaps existing rows. When I try printing in a different spot on the bed the problem persists in different spots in the model.

Any help or advice would be greatly appreciated.

[Liza]

I've had this problem before and one of the couplers was loose. Could also be broken. You should check on it.

[slugbutter]

Holy thank you! That's exactly what the issue was. Tightened right up! I still have to reassemble the printer and test it but I should be able to do that in like an hour. Thanks so much!