Hi guys, I'm looking for where you can get cheap rebuild top end parts for my 07 YZ450F. I had an incident on the trail with a truck and caused the plastic part that the air filter attaches to broke free of the air boot thus causing dust to get in my motor during the rest of ride. My motor still runs strong with no noise, but will let a puff of blue smoke out of the exhaust when started cold or hot. You can also smell burnt oil coming from the exhaust when riding behind me. Still starts well, but I want to pull the cylinder and for wear and will most likely replace piston, rings, and valves to be safe. I would appreciate any help with where to get parts, I have heard of service Honda, but I've never had to do any major work on my past Yamaha's.