88 gt 302 edelbrock carb,brand new holley blue all new an lines, new regulator, filters ,all new painless relay kit to pump. Started up runs good 6lbs pressure, drive it till it gets warm fuel pressure drops to 0, but it still runs like a raped ape, but pressure regulator wont`bring it up???????? I have a gauge on it right next to the carb. Like I said it runs fine even when the gauge is at 0 and the a/f gauge is still reading fine? ANYBODY HAVE ANY IDEAS?????? We did put roller rockers on it but they were adjusted to ford racing specs, and rev to 7000 without problem. Let it set and cool off for 20 min or so pressure comes back. Everything is new ,less than 50 miles on it and was doing it with the old setup to. HELP??? CARB??????