May have missed the subject somewhere, but I have a question about the gas gauge reading on my '50 3100. Cleaned the tank and installed a new sending unit (guessing of Chicom manufacture). After getting everything together, new sending unit, new wiring harness in place, and about 3-4 gallons of gas in the tank, the gauge reads 1/4 full +/-. Get the truck running, I fill the tank slam full---gauge still reads 1/l4 full+/-. Anyone have any ideas why it is not showing full, other than a POS sending unit? BTW, I am running an 8 volt battery instead of a 6 volt, because the local parts house did not have a 6 volt in stock.
