But then I never quit tinkering with the bow anyway. I'm always changing stuff to see what happens, and what works for me. I got my SlayR back in March and am still tweaking. And still getting more speed. I started out shooting 56lbs and 27" draw doing 282fps. Right now it's at 27.5" draw, 53lbs and shooting 306-307fps. Tinker, Tinker, Tinker.