fuel pressure dropping over time

Yeah, that could be an issue. dummy


well, in the light of full disclosure...this is what happened
when i redid the fuel system i replaced the stock sending unit with a 3/8 return style, the return was only 1/4 and i wanted it to be 5/16

so knocked the return barb out and put a 5/16th brass barb on
that leaked

so i got an Aluminum bulk head fitting and that leaked
put in copper washers on both sides and it still leaked...but only when the fuel level is higher then the return barb

at that point i said, screw it, so i bought a new sending unit, 3/8 with a 5/16 return from a member here

and wouldnt you know it...1/4 inch return


at that point i said some things i dutch i cant repeat here, and decided to keep the fuel level below the return barb
(untill i find a decent sending unit or figure out how to seal this one)

so...that may have had a little bit to due with my said "supply issue"