Wobble in Y axis, probably ball nut wear?

[quesohusker]

I’m having what looks like a similar problem. Is there a lot of play in the ball screw? Can you easily turn it with your fingers?

What could be causing this

Update: I removed both y-axis steppers. Both had the red bushings installed, but the stepper on the left (side with too much play) spins almost freely, and the stepper on the right offers much more resistance when I turn the shaft. I don’t know what a stepper is supposed to feel like, but I do understand single-variable hypothesis testing. I have a feeling something broke inside the motor. I ordered a replacement to arrive tomorrow. I’ll update then. I can see in the shape of the bad cuts …