You'll have to judge it yourself. Rule of thumb I use is 1 twist every 2" of string length. If your draw seems a bit short then untwist, if too long then twist it up. A friend bought a used bow from a shop many years ago and when he shot it I told him it looked way short. He took it back and they untwisted the string something like 50 twists and it fit him right then. We talked to the guy who used to own it and he said that he liked to twist the string way up (like 100 twists). Something I wouldn't do or recommend. Almost seems to me that Larry Wise had something in one of his books about not going over 60 twists. Maybe somebody else will know more on that.