I shoot mine with the cock vane of my Blazers up. I also had to increase the spring tension inside the rest. My fps is 298. Even now, if I shoot 5" vanes, I get contact, it is that precise. I have the pdf on how to increase the spring pressure if you want. Just drop me an email. The rope placement is important also. Don't worry if you cut it too short, it's just string loop material which is pretty cheap. Once the rest is adjusted for your setup, you should be very happy with it.