Then ya gotta pull the cams if you need to shim any. Thats where i draw the line and bring it to the dealer. Way too much trouble and chance of screwing up. My speedmaster was far easier because the cams were gear driven off a shaft that itself was driven by the chain and didn't need removal. yet even then i screwed up and dropped a washer into the works as i was zipping her up ! I don't need that kind of aggravation anymore !