Odd fuel gauge problem

[RIDE-RED 350r]

Truck: '78 K-10 with functional dual tank setup

Problem: Fuel gauge reads more fuel than I KNOW it has. But does not read at the classic problem 3 o'clock position. It does move and now and then will drop down and read what seems correct, but most times it reads more fuel than I know it has in it. Same issue, both sides. Very occasionally, the gauge will drop to empty

Background info: I recently replaced my dash pad and removed the dash AC ducting as the rest of the AC system has long since been removed from my truck. It did take some work to get the ducting all out and I can see the possibility I disturbed some electrical.

I did manage to pop the fuel pump fuse when I was fiddling with my tank switch to install the backing plate. Obviously I shorted one of the contacts on the dash panel and the fuse popped. Is it possible I damaged my fuel gauge? I tend to think the fuse pops before damage can occur?

I have tried a different fuel tank switch and the gauge reads the same. The fuel tank switch is not new.

I have searched this topic but am unable to find results on my particular issue. My plan is to pull my gauges and check my wiring and see if I disturbed anything in a couple days when we get some better weather. Just thought I would ask if anyone else has experienced this particular problem and what was done to correct it.

Again, gauge reads more fuel than I know I have but very occasionally drops down to what I would expect it to have only to stay there a few seconds and go right back up to appx 3/4. Does this on both tanks.