So, I've been trying building some strings out of the Brownell Rampage and the BCY Mercury and during my draw cycle, the peep rotates up to a quarter turn. I do not have this issue when I was using my BCY Trophy. After building the string on the endless loop jig, I would stretch it out at 325 lbs for up to 24 hours so the creep should be gone. I've seen some JBK strings from SK90 and that peep doesn't move during the draw cycle. It's starting to really get under my skin trying to figure out what was going on. If anyone has any ideas or suggestions please let me know. I'm getting ready to say screw it and stick with blended materials.