Fuel gauge always reads full

[pbyrne]

I was at the boat this week.  Took some photos!

Found the gound wire wasn't attached very well, crimped it a bit better, reattached, but I didn't notice any difference.

[Noah]

Make sure use use the 12 in. tall sender. Ezell initially sent/installed an 11 in. sender in the tank I bought from them "some" years ago. Was too short and thus inaccurate.

[KWKloeber]

Begs the question again -- did you check the gauge per the troubleshooting instructions?
Check the continuity of the ground?  Continuity of the S wire between the tank and gauge?