It' s the weekend Len. I firgured I' d see more when all the techues get back to there shop or computers. Thanks for taking the time. You bet I got questions.lol I wish there was a book or video that had all the info about bows set-ups and tuning. I have some but I' m looking for the advanced advanced course. I think I know most of the answers to this post. I just wanted to confirm them or ajust my thinking if I' m wrong. I know torque is a big factor but I' m not too sure about spine. I usually eye ball center shot initially then shoot it in at the range. Mechanically it works for me I just want to understand the theory. JERRY