Starting problem

I can't see you having fuel / vapor lock problems in late November in NW Washington!!!

But there is some possibility that residual fuel pressure is forcing fuel past the needles/ seats on shutdown.

FIRST is check spark critically for quality with trouble. Get ready with a spark gap and a means to check the spark, IE maybe rig it so you can see through the hood gap while operating the key

SECOND I'd rig a toggle in the fuel pump circuit, and try shutting the pump off 10 seconds or more before shutting off the engine. Let it sit, and see if it restarts ok.