It reads somewhere like 5/8 full on a full tank. I searched around here and noticed that I am not alone. It has been like this since I replaced the stock fuel pump with a Wally 190 about 3 years ago. I finally have a little bit more time on my hands and replaced the pump with a Wally 255 I had laying around in the hopes that the sender arm was bent and could be readjusted. Unfortunately that is not the case.
I have read posts where people just filled up the tank and then just pulled the dash needle and set it back down at the full mark.
The question is whether or not the tank will remain accurate throughout it's range by doing this. I certainly don't want to buy another used sender for something like this especially since going in there is a pain in the ass at many levels.