I had a little problem to get my Switchback to fit just right. Now am in the process of tuning the bow. I have no doubts about getting it zero'd in. One thing that should be stated here is...it's more difficult to tune a High Preformance bow than a standard performance one. The Switchback is like the Jaguar of bows, it's extremely efficient and requires things to be a little more in tune than an average bow that has a little sloppier standards. Hope this makes some sense, and doesn't add to the confusion.