Line Lock problems!!!!!

Thanks for all the help guys. I did trouble shoot this system which did included all of your suggestions. I even called Biondo. I guess I just had a run of bad luck with this product. As it turns out the units were defective. The LL now works with a working Biondo unit. I am so glad. Changing to a different unit would have been difficult. As you all know there is not a lot of room in these A-bodies with a big-block in them and with a mid-mount plate there is even less. I was so worried that the lines were pinched to reduce flow I did remake a few lines that were already there. Then just for the heck of it I took one of the LL apart. WOW!!! I was amazed. The hole that allows the brake fluid to pass through inside the LL to your whole front braking system is only about .010 in diameter.
If you apply the LL and then pump your brakes it will work. All you are doing is forcing the seal off it's seat witch allows fluid to pass through. When you release the pedal the valve will return to it's seat to hold what ever pressure you applied. It's basically a one way valve. The clicking you hear when you apply it is the electro magnet pulling the piston with the seal into place. So if it clicks you know the magnet is working if it won't hold then the seal in the end of the piston is bad. Take one apart , you'll be amazed. If you want the cheap way out on this part buy one or accept one from someone is giving it away that is claimed to be defective and rebuild it. I will next time. Thanks .