Noticed that going flat out in 3rd and 4th today that engine occasionally seemed to misfire(?) one or two times but then seemed ok again at higher revs. Other than big bore exhaust and air filter it's a standard 95TT. Have read about converting the fuel pump to run 12V constantly and will probably try this out this weekend as I suppose it sounds like it might be that. Any idea's about what else it could be as I've only just bought it and have 12 months warranty so want to get it sorted. Supposedly had full service just before I bought it.