Designs are not lining up when using my RA2 rotary tool

I have it set to 32mm per rotation and the correct circumstance. I am using the rollers and it works for another cup I did. I haven’t messed with anything but now the lines are not lining up for my image. Any suggestions?

I’m trying to draw a circle on the outer ring of a round image. My slices are not lining up. My steps per rotation are spot on. The 65mm circle image is slicing up in to 5mm slices. The edges of the outer circle are off by almost 1.5mm. Cloudray 50w qs-p-50w.