2nd Gen Non-Engine/Transmission fuel pressure guage

[southpaw]

I posted several months ago about a no start when parking flat or nose up it took months and lots of pressure and vac test to solve the problem i think. The solution was to replace the westach fuel pressure sending unit it was leaking air around the electrical contacts i think. anyway it was replaced and the truck has started on que ever sence. But i am still thinking why is my westach fuel guage eratic. it surges from 26 lbs to 0 lbs at its own pace. ive cked the electrical wires and all seems to be in order. I also need to find a place to re attach the 5lb red pressure light that was detached during the fuel leak search. My plumbing was removed from the fuel injection pump and placed on the fass pump at the frame rail I dont see a 2nd hole to attach a pressure switch for the red light and with the fuel pressure guage so erratic i get cold goose bumps. I think i will call Genos and order another fuel sender. anyone else had so much fun with their fuel pressure? Just for kicks im having the same problem with the guage in my 93.