Just removed the sending unit again and the float is a solid black plastic cylinder. Tested it in a container of water and it floats and ohms change from 0 to 30 depending on water level. Reinstalled it and I now get about 10 ohms reading with gas in the tank. Gauge moves from below E to just above E when key is on.
JW51, yes the gauge worked before the truck sat unlicensed for a number of years. I don’t believe the float arm is hitting anything as I double checked when reinstalling.
Just now noticed where you’re from. I’m not far away….in Cape. Drive past Johnston City pretty often for various work and family things.