Fuel sending units

I used an endoscope to look into my fuel tank this evening and found that the dime store replacement pickup is about 3 inches from the bottom of the tank. I have an NOS sender on the way so I will play with the old dime store replacement and try bending the tube to see if the float will be 1/2 gauge when there is 9 gallons in the tank and E or below with no gas in the tank.

The 3 inches explains why I ran out of gas with 3-4 gallons in the tank!