i have a sbc 357cid 305H.O heads edelbrock rpm intake 750 edelbrock carb ..runs great on hwy kickdown is awesome ...but from a stoplight or a quick take-off it dies like no gas ....my fuel pressure gauge flips between 4 and 10lbs of pressure rapidly between the 2 is the pressure supposed to be like that or steady ?edelbrock tech says no pressure above 6.5lbs ...but its not floodind ..it never has gas in the first start...have to pump it like crazy to get it to start....any thoughts or ideas.