Jim, I beleive you and the rest of the techie/experts here. Im not doubting the knowledge on this board at all. I wasn't saying that the block was the likely culprit. My 1st reaction was low brake fluid level, air in lines or a kink in one of the lines. However, if that distrib block isn't hooked up correctly, or the wrong sized lines are used or are plugged, odd things can happen. Thats all I was saying...