Are you still using the stock unit? Enjoy installing it. I just installed my first 3 shoe on my .21RG and it was a bitch! I could only imagine the fustration it would be to install a 4 shoe clutch.
I've put a couple gallons thru this 4-shoe clutch and am very satisfied w/ it. It doesn't slip when it gets hot like the stock one. I've held it in place and tried to overheat it and it still pulls! I know this is a little extreme, but I wanted to find it's limits, and haven't yet. Wheelies....anytime! Mud....No problem! I gotta get one for my other Maxx now.