Thanks for the support, osbornsm! lol. It is quite disheartening after spending thousands on parts and labour to drive home with a MIL
but the support from both phunk (who replied within minutes on my late-night email) and my mechanic (who has put in hours of extra labour at no additional charge) is very reassuring.
To the rest of you, I'll keep these suggestions in mind if/when I take a look at the fuel pump myself. I expect that the fuel pump itself is grounded correctly because there are no fuel starvation issues.