I had posted in a different thread how I hated the noise from my TM Designs chain buffer. Someone posted that they had mounted thiers with Automotive Goop. I re-did mine with the goop. NO NOISE. NONE. QUIETER THAN STOCK. My suggestion for guys that still run the stock units, mount them with goop. It will prevent the notching/wearing beneath. Since the wear comes from the stock piece beating the crap out of the swing arm, if you goop it, it wont beat the swing arm. No slapping. Im really happy with this, it no longer sounds like someone is shooting at me!