Hi pleiades, thanks for the quick reply mate!! I can tell that the guy before me has definitely done a few bits and pieces to the bike and as you say has put them back to standard before he sold it to the dealer who sold it to me. Ive definitely had trouble with a jerky throttle around town, as soon as i let the revs off the bike jerks forward (not the safest thing halfway round a roundabout ive discovered, lol) and im definitely going to have to have a closer look at kevs mod. I havent seen anything else attached to the bike and ive had the seat and plastics off so im sure i would have noticed. As i said im a total newbie and i dont want to do any damage to the engine once i start with even these simple mods. I think for now ill leave co at 40 and keep the snorkle in place, buy kevs mod and take it from there. Ive had this wee bike a week and absolutely love it round the country roads, its just a bit of a ****** to get used to round the town :-)