KTM 300 EXC 1997 42 idle jet 172 Main Jet R38C Needle Stock Pipe w/ fmf turbine core silencer Other mods unknown enough compression i can barely kick it. (assuming the top end is good) fairly clean power valve The bike has a lot of trouble starting. Once started it has great low end snap, but anything other than that it is sluggish and smokes ALOT and never really revs all the way up. Pulled the spark plug and it was black so i started with cleaning the carburator and replacing the spark plug. Rode it around and no difference and pulled the new plpug and it was already black within minutes. Tried moving the needle down and still no difference. Set the float lower...no difference once again. anyone have any idea how to solve this problem? im desperate to get it fixed!