Sorry that I haven't been back here, I expected to receive emails for any updates to the thread. Check your carb, and replace all the jets. The air fuel thing in front of the bowl, I have mine set at about 2, kientech recommends no turns past 2, but at 1 1/8 my bike won't idle properly unless i raise the "ticker." If you removed the airbox lid and drilled out your exhaust with a 1 1/2" hole saw, and welded in a 4" piece of 1 1/2" metal conduit, then bump up the main jet to 120 or 125, I'm running 125 right now, but tonight I'm replacing it with the 120 to see if it removes the high rpm bog. Good luck with checking the valves, I had a hell of a time just checking the rear one, and I couldn't even manipulate the feeler gauge to check the front, I hope theyre ok. I would not go big bore kit, too expensive. I'd just buy a dr200 engine and throw it in there, but first I'm going to buy a stage 1 or 2 cam for a drz 125 and see how that works. Also, shim your jet needle, like a 1/16" or so, just a little, and make the point sharper, that's what comes with kientech's kit. I looked, but I couldnt find any reeds on my bike. I've had that fricken carb off and on probably 20 times this last week.