Rick James - I'm not a big fan of the company, seeing as I e-mailed them with a question after I got mine and instead of responding to it, they sent back an e-mail telling me why I should purchase their product (they obviously don't read their mail). In any case, I put the STS on my bow and didn't really notice much difference. That is, until I had a problem with the bottom cam one day. Seems it started rubbing against the limb, causing my shots to go high and right. Not knowing what the problem was, I thought maybe the STS was catching the cables, so I took it off. The next shot I took, the bow shook like I was holding a hollow pipe that someone hit with a sledge hammer. Needless to say, I put the STS back on (and got the cam fixed). Still not a fan of the company, but reluctantly have to admit the product really works.