I Recently Purchased A Used Pulley And I Noticed When I First Put It On It Did Not Take But One Hit And It Slipped Rite Over The Crank.so I Put A New Bolt With Loctite And The Bish Still Slips And Comes Loose.took It Off Put The Stock Unit On And Runs Fine. Does Asp Make Any Kind Of Sleeve For This Type Of Problem? If Not Ill Try To Get Rid Of It For A 100 Bucks With Both Belts Cause I Dont Want To Fool With It.