Hard to start if sitting about 30 mins or starting shutting off then immediately restarting it has trouble somtimes stalls then clears up and runs fine. Also fuel pressure is About 51 and idle but as soon as Key off drops to about 6 Ibs in a few seconds.
How did you check the injectors for leaks? By "looking" at them?
IF they are leaking the leak will be inside the intake manifold at the injector tip and therefore not visible unless removed.
What about the other leak points?
IMO it may be short sighted to rule out the injectors without testing. But for the home DIY'er testing fuel injectors is not easy. Which is why I just send my out to be "handled" by a pro. If this is a high mileage car the likelyhood of one or more injectors being partially clogged is high. One of the better parts about InjectorRX.com is you get a flow report before and after cleaning.
Tech tip. bag each injector with the Ford cylinder number it came from. Then if there are problem injectors this can be tied by to the original cylinder.
Since it's a known fact that the fuel pressure does drop between key cycles there has to be a leak somewhere. IF you are certain it's not the fuel injectors then what has been done to rule out the other "possible" leak locations pointed out?