Another fuel gauge question

[Buckthetruck]

I spent this afternoon reading through several threads on fuel gauges. My gauge sits at empty all the time but drops to a little more empty with the ignition switch turned on. From what I can tell, it seems I may have a hole in the float. Does this sound right? I did a little tweaking with the ground wire but nothing changed. I did notice, though, that I could get the needle to move up a little with a little heavier acceleration. Does this go in line with the hole in the float theory? It is a '65 c10 with the in cab tank. The PO put in a new sending unit and said that the gauge just doesn't work. If I unplug it from the fuse block, it jumps to full. Thanks.
Posted via Mobile Device