My motor was running great i just got it broken in. I took off the motor to tighten a few bolts and when i put it back on and rode it, it boggs really bad. Seems to be running really rich. If you put the choke on it helps but it isnt as good as it used to be. The inside of the spark plug pulled out but i put it back in. I think this could be the problem, but that dosnt explain why it runs better with the choke. Does anybody know what might be wrong?