So I just bought a Z7 and the dealer installed a d-loop that in my preference is too long, and put a metal knock between the knots on the d-loop, just under the top one. The first time I drew the bow back with an arrow I noticed it lifted off the rest; not to mention the arrows werent hitting anywhere close to where I was aiming. Just from eyeballing the sight and rest, it should have been closer than what it was at 10yds! My concern is that I don't think I even need the metal knock cuz i think it puts too much pressure on the arrow. I've always used a plain d-loop and nothing else. What do yall think???