Hi guy's, bought a Tlr200 a while back and it came fitted with a mikuni copy(pz22....but outlet side is acctualy 26mm ).Long and short of it is I now have it running great from tickover to 3/4 throttle....then stutters, making me think main jet not right....but plug looks chocky brown at chop. It will pull full throttle from low revs, but when revs get high it stutters. So, my question is, maybe it's not the main jet, but rev limiter or just plain crap cdi ignition curve? I have heard a pit bike cdi is an improvement....but which one? Could also be the airbox which has a nasty kink in the standard inlet rubber tube which hooks on to the carbie...this might be ok with standard keihin shit performance carb, but not suiting the Mikuni?. Made a less restrictive muffler as I thought maybe it was choking it...but no difference. Any advice most welcome......been trying to down load some pictures, but didn't work....well it kinda did.