Ethanol and Mopar Pumps....Trouble ?

SO, I restored an old F-100 Pick-up for my daily banger and tow vehicle. All well and good. BUT................

The 67 Cuda sat in the garage for about 2 months and wasn't started or run. It has a brand new carter carb, new tank and sender, new lines, new fuel pump, and the motor was just rebuilt. It used a 5/16 clear fuel filter.

The car started to run out of fuel and die...(ran 1000 miles after rebuild with NO troubles)..Very embarrassing when you're on a main highway.......Let it sit for just a bit, and it would start again.......but very quickly die when you tried to go down the road. Classic fuel pump symptoms.

I had to have it towed and fixed.......new pump, and a new filter....away we went......so far with no trouble. BUT, the pump still had decent pressure when tested, and held a vacuum against my finger......and the filter was tested and taken apart, and nothing found pluggin it.

I guess my question is this: Apart from the remote possibility that I have a bunch of crap in the tank that drew up to the screen and choked it (VERY remote.........), could the stinking Ethanol eating away at the pump have anything to do with this? Is it possible for the pump to "seem" OK, but not work right "under pressure" due to the alky eating away at it while it just sat there?

Yes? No?