The neutral and reverse sensors wouldn't keep it from getting spark, it would just keep the starter from working period, so his sensors aren't the problem.
Out of the 4 stock sensors, I only have one that's still hooked up and working, the reverse sensor, which doesn't do a damn thing except make the dash light come on.
god dammit this is pissing me off! I did another spark test with the lights off and it looked alright. I don't know what the **** is wrong with this thing! If I can't get it tommorow im taking it too the dealer. Let those fuckers fix it.
You should at least try another spark plug, if it's been soaked with gas it's going to give you problems. I think the best way to clear a flooded engine is to crank it for a few seconds with the plug out, and just let the plug out for the rest to evaporate. That's what I do with my tractor when it floods, I never flooded a quad before, but it should work the same.