how do i replace the pinch wheels?

[LimaDesigns]

the rubber off one of my pinch wheels broke off so i bought replacements but i can not, for the live of me, find the instructions on how to replace it ;( i have an order due tomorrow... heeelp

[MeFlick]

I did a quick search here on the forum, and the Learning Center and didn't find anything (but doesn't mean I didn't miss it.) are you talking about the entire pinch wheel mechanism or just the rubber part it's self?