On mine (new AZX1308 SU Fuel pump, rebuilt AutoLite 2100 with brass float) for cold start, turn ignition on, let fuel pump run 5 seconds or so, pump 3 times, starts right up. When warm, if car sits for 20-40 minutes after running, it seems flooded and I need to hold gas down to start after 5 seconds or so of cranking. I heard somewhere it was typical of that Autolite, don't know. But I think if the fuel pump was left on for hours I can see the potential to dump a lot of fuel out of somewhere. I've played with the fuel level a bit, tried lowering level a 1/16" or so thinking maybe some sort of syphon was going on. Maybe a slow leak through the acceleration pump circuit. Even observed wet level while running (
video here) to see what was going on in there, still a mystery. I do carry an Element E50 fire extinguisher, just in case.