The problem with twisting up is that it changes the string stability, that is built in. The string is designed to be dead, and not tist during the draw. If it is twisting, then you need to twist the string up and down until it is neutral. The problem comes when you need to also twist in order to adjust string length. The string stability problem comes with all of the super strings, though WC claims to take all the stretch out during manufacture.

I have had good results with Zebra. Always keep all your bows main measurements in a notebook, so you can check changes.

I would email your question to Mathews, it must come up every time a bow is sold.