After two years of fuel tank problems , I finally discovered what was causing the problem .
The felt from the cap of a fuel additive or stabilizer was floating around in the bottom of the fuel tank and would get sucked onto the pickup tube . It was the size of a nickle and about 1/16 thick . After I had syphoned all the gas from the tank then dried it with rags attached to a dowell , I let it air dry for a few days then attached a piece of small diameter pipe to my shop vac and vacuumed out the tank. First thing to come out was the felt bottle cap cover .
By the way , I never was able to remove the pickup as it was galled onto the tank fitting ,I had to install a new mikey moused pickup into the tank .
After all this I have forgotten how to attach the wires to the fuel gage . The pink wire , should it attach to the center bolt ?