Re: Is a billet pulley available?
Pulley? I'm guessing you're talking about the chain tensioner roller. The chain should still have about 1/2"-ish of play. It sounds like you've got it set too tight for it to be wearing a groove into it.
That said, there's a bunch of different materials I've heard about. Roller skate wheel, little sprocket, some other plastics that don't wear.