If your string is starching your bow poundage should increase and your draw length should get longer and if your buss is stretching shorter. String stretch will make your peep rotate. Put a mark on your limb bolts with a magic marker and see if you limb bolts are backing out after you shoot it after time. Check your brace height and if it moves and gets shorter you string is stretching and will get longer if your buss cable is stretching.