[snake farmer]

Thanks for all the feedback. All points well taken. I agree with the fact that many of the companies seem to hype the need for higher flowing pumps. Way more than what really is needed. But here is my problem, partially restated. I have a designated pump for a pro-fogger port NOS. I also have a smaller pump for the engine itself. I have hugh money in all this setup and plumbing, return lines, regulators and all. The systems won't stay primed and I am trying to MEND the system without putting everything on the shelve and spending more $. Rather than rip out the system and patch the holes etc, I plan to do 1 or maybe 2 intank pumps to help prime the others. I really have no faith in the check ball thing working. Someone pointed out that it is not just enough to have fuel to the external pumps but one needs to have a little pressure there too. They are gravity fed pumps and they rely on the weight of the fuel against the pump to aid priming. Ford used the pump in the tank to push fuel to an external pump mounted on the frame in some of its trucks. I might be wrong but I bet they explored the check valve as a means to keep fuel from running back to the tank and un-priming the pump but found it didn't work as well. I think I will put a performance pump in the tank and see how it does. I will post the outcome. Thanks again, as always, good feedback.-Ray