I know its not the paint match as I always match the bore size to my evil pipe kit. Guessing it just needs a service, I'll probably hand it to LiPS at the next round of the masters and get him to service it between rounds.Bob said:A new reg shouldn't have that large a dif even when not run in, LiPS will service it and it should be okay, could also be dwell problem or rubnish paint match.