Well all I know about it is ,, it is when the cames are set to a point where they both break over at the same time,, and whan the string and cable are not streached, I figure on taking My xboe to the proshop before hunting and have them check it out to make sure everything is as it should be , cost like 10 bucks to have it tuned,
dont quote me on the tuned bow thing cause I am not completele sure there may be more to it.. thats just what I have herd..