My 96 T100 seems to have a gas leak somewhere above the tank. It is hard to see but I can smell the gas and see that the lines heading toward the filter are wet. Has anyone had any problems in this area? I don't know what to expect. I plan to drop the tank, but I don't want get stuck with something I can't fix. The truck has around 135K miles and is in decent shape, is this typical?

ttreat
95 T-100 SR5 4x4
Pretty much stock, except for the goofy oil pressure gauge the previous owner installed.