I really need to figure out the balance with the idle and carburator arm. I thought it was fine but it ocasionally cuts out on me while holding the break too long. I'll figure it out eventually. I dont know if this is because of the break in process, but i can see a little smoke comming off the engine after its been running for like 5 minutes and i can hear this sound too like gurguling/ sizziling mix. Any idea why i hear that? could it be the fuel? or is the engine over heating. I hope its not over heating.