After driving my bike hard into the ground at evensville last week, and destroying the dep pipe..tweaking the front end..I spent a couple hours..fitting stock ktm200sx pipe on..resetting front forks and bars.then pulled the 39mm keihin carb off..and a 38mm mikuni..mounted right up with some jetting changes..and bamm, this bike is hitting hard problem solved..tried every thing with the stock carb..time to hammer some laps..five months after the build..see y'all at happy ramblers.