Hey all!

Just got a printrbot play a few days ago, and it prints like a dream. But I installed the Y-Axis upgrade / heated bed, and since then, every once in a while the layers will shift on my prints. HERE are some examples (I'll take some more in a bit). The first photo (headless Vader) is before I re-tightened the tension belt on the Y-Axis, and the second photo is after adjusting the belt.

So, it's not shifting as much any more, but it's still shifting and I'm not sure why.

Any help / suggestions are appreciated!

Settings (Cura):

Speed - 40mm/s

Temp - 210C

Layer Height - 0.2mm

Infill - 25%

I think it may be shifting when it needs to make small / fast movements, but I'm not sure, as I didnt watch the entirety of these prints.

The next thing I'm gonna try is a different slicer, just to check, but that may not be necessary?

But again, any help is appreciated!

Thanks