Wow, 2008? Well, I'm only 13 years late - But, you're probably still awake- so, I wish you have elaborated a bit on which hole needed honing deeper. The *88 project I am working on came with a rear pulley on a rolling frame and a front belt pulley on the tranny in the 3 baskets of other parts. I assumed it had been operational that way before the seller tore it all down- So, I decided to switch the chain sprocket already mounted on the engine I installed on the project frame with the belt pulley - mainly because I like the looks of the rear chrome pulley cover more than a sprocket - After making the switch I'm wondering why it looks as though the alignment from front to back will be off considerably when the belt arrives and installed- I was thinking for a minute you were talking about the front pulley mounting hole but- then- can't be as that requires splines... Any help appreciated if anyone peruses this thread again.I converted my wife's 1987 883 from chain to belt. I would never go back to a chain. It has about 40K miles on it trouble free in the past 20 years. I used the HD kit just when it came out. I was going to use an aftermarket kit that needed swingarm mods to make it fit, and I was just about to order it when HD came out with the kit. You just take the old stuff off, make one hole deeper with the supplied end mill (later years didn't need that step) and put the new stuff on. I really like it because I don't have to constantly adjust the chain or lube the damn thing and my wife likes it because she doesn't get chain lube all over everything.