ok i let someone ride my banshee and they loaded it bad and got on it to clear it out and was only running on one cylinder so i figured i fouled a plug so i went to the store got two new plugs and same thing swaped the coils over and same thing, but when i turn the gas off while riding it begins to fire and run fine until it runs out of gas, but the compression is good. so itook the carbs apart and cleaned them good and checked the right float and it floats put it back together and same thing need HELP.