I posted a thread much like this last year when we first started. The advice we've found to help the most is to rev the engine once before the tank is opened then let it idle only while the tank is open. Then a few revs before leaving the pits. It was said that when the lid is open there is no fuel pressure so if you rev while it's open the engine uses what little it can out of the line and you end up with a large air bubble from no fuel pressure. Then usually the first turn or lift point after the pit thedreaded flameout occurs. We've followed thisrule with much less trouble since. My son and many others shake the car too before putting it down. I don't know what this is supposed to do but many of the cool guys do it so we do too! LOL!
Good luck!