Hi, Im new to this forum and could really appreciate some help/advice. I picked up a 2009 KTM 450 EXC a week ago off craigslist. The bike runs fine, looks in excellent condition with 29 hours and 530 miles, BUT, it smokes out of the exhaust, intermediate pipe, and breather? hose under load. Where should I start??? And what could it be? Any help is INCREDIBLY APPRECIATED. -Dave from bony New England.