Thanks for the points. Except for a 4" splice where I used rubber fuel line (purchased this year), all lines are rigid metal from the tank to the pump, and the pump to the carb. I feel I'm reasonably protected from ethanol damage due to the rubber being brand new. We only have E10 locally.
I was afraid I might have experienced some kind of vapor locking or pump failure. From the responses, it sounds like I need to devote my attention to debris.
I'll siphon out the tank, check/replace the sending unit, change the fuel filter, clean the carb, then fill'er up. She should be fine.
Bill