I was just trying to fix my window roller which had popped out of it's nub. Instead of popping back in it shattered. I found a fix from someone who used a shower door roller for the fix and it worked well. http://www.jeepforum.com/forum/f13/b...ix-you-902285/
So I'm gonna measure the old roller and see how close I can get to the shower roller. I don't even care if it rolls, so long as it slides well. It would be easier to file flats than to reduce diameter uniformly.
The down side of the whole thing is the removal of the old nub. I'm going to try and do it without removing the regulator.