I own two QAD rests, one is sitting in a box, I got one to work on my Diamond BlackIce #60. Following the direction will not work, but it is a starting point. The launcher needs to come up 90 degree to drop out of the way, but you may still have a timing problem. I've found that the piece that attaches to your down cable, need to be at the right location on the cable. The QAD is working on my BlackIce