this 4 mil i have has 39mm carbs with pump. The problem is runs, idles but i took out to drag today and i would start out in 2nd gear strong and then it would seen too stall(loose power) for a couple seconds, then pick back up and start running good then stall for a few sec's, then pick back up and run good , then stall,,,,etc... I noticed after about 3 times dragracing that one of my carbs was flowing alcohol out of one of my carbs. do you think this is my main problem? also my plug is gapped at .020