[Payton King]

I believe that they get the distribution block from Master Power Brakes. You may want to call and ask them. I sounds to me that there is a clog or restriction in the block.

If I am not mistaken, you do not need to run the distibution block if you are running 4 wheel disc. There is a check valve in the block to keep a small abount of pressure for drum brakes. You do not need this on disc. I believe that you can bypass the block for the rears...just make sure you have proportioning valve for bias adjustments. You really don't need it for the fronts either, but since you have plumbed it up, you might as well use it on the fronts.