I notice that after about 10 mins of ripping and running the sport and it gets good and hot, if it shuts off I have to prime the heck out of it to start it again. Granted the lines are around the hot engine so the fuel can't run to carb. This forces me to hold down on the ez start for 10-20 sec intervals while tapping the exhaust. Are there lines that prevent this or no? Also are there any safe engine cleaners that I can use to get grit off of engine?