After doing a bunch of research I've decided to stick with the Butler balance bar unit. I did have some issues with the main heim joint that is attached to the bottom of the brake pedal. It's the one that carries the balance bar. It was not fully tightened and it flopped around. So the ball of the joint was not doing what it was intended for. The heim was actually pivoting on it's thread instead of the ball moving. So I aligned it and tightened it. Then I pinned it with a roll pin so it would not move out of alignment. I also changed the adjusting nuts on the balance bar with nylock nuts installed backwards. The narrowed portion of the nylock nut is against the ball. This I thought provided for maximum travel without binding on the points of the hex nuts.
I still intend to place a proportioning valve to reduce pressure to the back brake in the event that adjust is ever needed when driven aggressively under track conditions.
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