1st-thanks for input from everyone re: cam question I had. Looks like I will be making arrangements to switch 04 fat boy to 31g gear dr. Read on one post that due to excessive crank runout at pinion end, guy had to stay w/chain drive. In speaking w/andrews tech, they mentioned that they have a parts list for switching over to 06 dyna chain system and that cams for system are in production now. In event, while bike is apart and I did have a runout problem, what do you think of using the new chain system w/hydraulic tensioner and roller chain instead of just staying w/present chain drive? My hd dealer is going to get list from andrews and price it out just in case.