I decided to make a measure stick for figuring out how much fuel is in the tank. So I took the tank off and completely drained it. I tipped it over and also drained the petcock. Then I took a 32oz container and filled it with fuel and dumped it into the tank, one by one making marks on the stick periodicaly. Here is where the strange comes in. I was able to dump 6.5 32oz containers of fuel into the tank before it was filled to the absolute top. As far as I can tell 32oz = .25 gal. So I have a stock 2.1 Gal tank that holds 1.625 gal of fuel? What gives? Am I missing something?