I've personally never touched a hemi before so I know nothing about them, but I have a friend who has one and brought it over to the shop to fire it up. We got it running but was finding pieces of rubber coming off the front of the motor. It looks like the elastomer from the damper is rubbing the timing chain cover. We haven't removed the damper yet to inspect things but has anyone else had this problem? This was a new, stock stlye replacement damper. Do I need a thinner one...if they make one? Any help greatly appreciated.