I have installed most of these rests for bows that we have in stock, so none of the connections were intended to be permanent, just in case the customer did not want the rest when he/she bought the bow. I did not have a vane contact, but anyway (for temp use) I have installed them on the cable slide with a simple knot (easy to undo) and I have installed them on the cables with a string nock. I installed one more permanent setup on a liberty by serving the cord in the cable.

Just try something different.

P.S. are you running odd feather up with your rest. Kind of a dumb question, but I have found that to work better for clearance.