My peep site tubing needs replacing so I went to the local archery shop and bought some new. It is the silicone material and it is really much slicker than the rubber tubing I had before. How do you guys attach it to the cable? I have it on the string using the post that is on the back of the peep but I am not sure how to keep it from moving on the cable. Right now I have dental floss wrapped above and below the knot and that seems to be working. Thanks for your input.