yea i'm still using my old school stillen flywheel, which seems to hold up ok. but before i got the clutch masters i got the first edition of the RPS max series in a 6-puck called the carbon claw at the time,too bad then they didn't know you couldn't us it with a stillen flywheel they said sure no prob it ate the heat shield like a fat boy at a buffet, i had scars deep as a pencil lead and puck shavings that looked like a bowl of cotton candy, oh well live and learn, one day i would like to step up to the RPS flywheel though.