Stepper gear alignment problem

[dchauran]

I added some dampers to my Max v2 this weekend, and they work mostly okay, however on 2 of my steppers I am unable to get the belt to aling perfectly, resulting in a bit of rubbing on the side of the belt. The issue is, that the belt seems to move depending on whether the tower is going up or down. e.g. when I raise the tower, the belt shifts towards the inside of the motor and rubs on that side. When I am lowering the tower, the belt shifts to the outside and rubs on that side.

I have them both centered as well as possible, so they only barely rub in one direction now, but I'd like to get them not rubbing at all.

Any ideas what would cause this? I did not touch the towers, the only things I touched were the motors, the belts, and the tensioners so I'm thinking it has to be one of those as the culprit. Possibly over tensioning?

[Jimustanguitar]

The movement of the isolators should barely be discernable. If you're getting enough movement that it's causing alignment issues, it's likely that there's something else at play. What's your belt tension like?

Pictures would help.

[dchauran]

It's pretty hard to get pictured in there. I can hardly get to where I can see inside there.

The belt tension is pretty tight. I hand tightened, and then moved the tensioners up maybe 1/4". Wasn't a problem before, but before they were rigid mounted, so I'm thinking that the tension might be enough to slightly tilt the motors.