just finished rebuilding the top and bottom end on the kx65 and put the engine and everything else on. The rebuild went together very smooth and I could shift through all 6 gears and everything before I put it back on. Today I finished putting the engine on and had everything hooked up like it should. Tried cranking it a few times and had no success. I've kicked it at least 150 times today and I've gotten it to idle by twisting the carb screw all the way in, but the bike will only idle for a few seconds then bog out. Also the chain is not on right now, but when I cranked the bike up while it was in neutral I noticed the front sprocket spinning.... That's not supposed to happen! And when I pressed the throttle the sprocket spun even faster while in neutral! I also shifted through all the gears and it accelerated like it was stuck in first gear, no matter what gear it was in! And I coukd tell if it was in neutral or not because I could spin the sprocket freely, however when it was in first gear I couldn't spin it. So I'm extremely confused. Anyone have any theories?