with those monkey arms you're likely to have that problem with about any nock. All you have to do it torque your string at all or pull hard against your back wall (stretching the string even further than your DL) and it will pop off. I'm surprised you haven't had this issue before. Really your only viable remedy is a D-loop or Gator Jaw release...or go back to using fingers. The only other option is go to a shorter DL. I use a D-loop now that takes care of the nock pinch but I also was having issues with string slap. I also have really long arms and my elbow naturally locks inward as well, to the point where at my natural 31" DL even if I don't make contact with my bare arm if I'm wearing cold weather gear almost always would snag. So I shortened my DL by a full inch, which keeps my elbow from locking in but also in effect would reduce the severity of string angle at full draw.