Yes, the parking brake is a problem. I have the adjuster tool and did the procedure that I believe was correct. I know that 4:56 gears with a big block and 700R4 pull decently off idle, but I had the drums before, so I had a frame of reference. And I don't use the park brake much with an automatic transmission either, but I wanted it to be functional if I needed it. As it is, I just use it to keep the calipers adjusted.