Need help: Bought the bike 2 months ago & it was my first 2 stroke coming off a 1998 Honda XR 400. When I bought it it started fine, idled good yet smoked a lil too much. Most 2 stroke riders I've ridden with said it smoked too much (a few are all KTM 2 stroke riders/racers)... a friend checked the jets & everything is still stock... adjusted air screw, new sparkplug, new air filter & bike still smokes more than norm... the new issue its having is fouling out sparkplugs as its running too rich possibly?? It starts first kick every time... idles for a while... give it lil throttle twists (1/8th turn) then loads up & dies out.... just started doing this too & Im clueless as too what it can be. Any help is appreciated. ** Not sure if it matters but Im running the red spring in the PV & its turned it mostly. Thanks in advance. could it be bad piston ring/piston... crankshaft seal, etc?