I saw a screw on what looked like a helical spring, but did not mess with hit. I will go get some gas tomorrow and see what happens.

UPDATE:

I went to the gas station and put 5 more gallons of gas in my car. So thats about 6 gallons plus 5 more. I should be close to 2/3rds full.

But I still do not come up to half way yet. It did definitely move. I think I am just biased too low. The whole gauge needs to be adjusted up a notch. Blue, if you have a diagram of that adjustment, I would love to see it. Guess I could just take my sending unit out. Better to read a bit lower than you are than higher I suppose.