I followed "phorunners" utube video. Added a ground to the sender. Cost less than $1.00 and I haven't had a problem since.

Here is that video, I believe: https://www.youtube.com/watch?v=KNbMq7VvpdI

I found it after a search, and I am going to try it, as I would have only about 15 minutes and maybe $1 to lose, if it didn't solve the problem. I can't say how utterly pissed I would be, if I removed my fuel tank and replaced the sender and the problem still persisted.

Twice in the last 2 weeks, my gauge showed 3/8 tank, and it was nearly empty. One of those times, it did die on an interstate exit ramp. Fortunately, I was able to restart and limp it to a gas station that was within sight at that time. My gauge goes full retard about once a month. Sometimes showing full when empty. Sometimes showing empty when full. I have learned to watch my tripodometer, and start looking for a gas station at 300 miles, because I know that it will die between 325 and 375 miles (with city driving). I always reset tripodometer 1 at every fill, because I calculate my fuel economy at every fill. When my gas mileage goes to hell, then I know something is wrong and that I might need to fix something.