Anybody bought a new Bully 12 tooth driver with the bearing instead of the bushing. I bought on and put it with a 60 rear sprocket. Adjusted the chain and when I rolled it over it was like the chain wasn't rolling over the sprocket smooth. Took it back off to look at it. On side of the teeth the driver has grooves in it for the chain. Never saw anything like it. I took it off. Anybody else had this kind of trouble.