Maybe I overstated myself when I said the STS will be the newest "Must Have" on a Bow. But this product deffinitlymade my groups to tighter. I never said it was cure all but I do feel it could be a piece of equipment someone can add on to their bow and have it be beneficial to their shooting. And I tell you if it wouldn't have done anything for me I would have sent it back in a heartbeat. Yes I was excited to try it, but if it didn't work why would I keep it on my bow and tell everyone in cyber space that it worked? Yes it may not work on some bows, not everything will work on every bow. I'm just paasing on a friendly note to tell others that it worked for me and that maybe they might want to try it. Sorry all if I seem a little agitated but a comment above kind of set me off. That is a first for me on this site after being a member for about4-5 years I think. I was just trying to pass along some friendly advice to try a new product.