To set or change my brace height, I unstring the top end, keeping the bottom end attached, twist to the desired direction (longer or shorter), then restring the bow.
However, I just received a new Zipper and the instructions say to do the twisting from the bottom end. Also, I've been reading Fred Asbell's Instinctive Shooting books, and he says to completely unstring the bow and twist up or down and then replace the string.
It seems with the Zipper way, I'd have to reverse the stringer to make their system work and Mr. Asbell's string might lose some twist in the exchange.
What do you do?