RE: problem with my peep sight
You don't need to glue the loop. When you get it where you want it, insert needle nose plyers in the loop and open the plyers. Use as much pressure as you can. You can really get it tight that way and it won't slip or turn. I bought a cheap pair of the big needle nose plyers just for this.
On the downside, you will need a tool to remove the loop. I use a scratch awl with the point sanded slightly round. It came with a needle point that hurts when it slips[:@] A few seconds with 400 grit sandpaper solved that for me.
Good luck
Allen