fuel guage questions

[bilis@napanet.net (Eric Jackson)]

I have had a problem with my fuel guage.  It would read 3/4 full when the
tank was full. So I adjusted the back to move the needle slightly. It
worked a couple of times, then it started to do the opposite (it would say
I had a 1/4 tank when the tank was empty)

I checked the float, it was ok.
I cleaned the sending unit.

I am stumped.  Any advice??

thanks for any suggestions

Eric