OK, I went one needle richer and went richer on the primary (89 to 91) and secondary jets(81 to 84) with no effect on the test drive at 70 mph climbing two hills. So I guess it is basicaly a fuel delivery problem? I have 120 gph Edelbrock electric back by the muffler with a heat shield and a stock Carter mechanical. I have the vapor separator plumbed in. 3/8 line up just before the mechanical pump, but 5/16 line into the pump and after the pump. I have observed that the return line takes away about 2 PSI, maybe I should take the separator out of the system?? The small pressure gauge at the carb is hard to read, but averages 6 psi.