I have a 2001 KDX200 which I've rejetted but it still seems to be running a tad rich. From idle to about 1/8 throttle, not much smoke. Above that, I'm getting smoke and still some splooge. I'm at about 800' above sea level, stock pipe and silencer. Air box lid is cut leaving just enough to hold the ignitor box. Main jet is 155, pilot 45 and needle 2nd position from the top. Ready racing air filter. Now it runs fine, idles ok and rips through the power band but does smoke a bit. The plug is still showing a slightly rich condition. I'm wondering where to go from here and if anyone has found a good combination pilot/main whit a 200 like mine with stock pipe and silencer. I'm thinking a step down to 152 main/42 pilot. Also, I may get a FMF Gnarly and silencer this winter. Would that have much effect? Any help would be appreciated!