Year, make, model, and location?
Maybe someone can suggest you a good mechanic.
Well, what I'm looking for at the moment is simply, does the symptom of sometimes not starting - for 20-30 minutes, or this last time about an hour until I put it in neutral and backed up to level ground to get towed - after being driven and parked and after the repairs listed above, fit a fuel pump, a fuel pressure regulator, both or something else?