Just as info years ago the connector device was posted by a former member and a Texas hitting instructor ifubuldit . Dana has made many such devices over the years. His only mistake was not getting a patent. Now there are many of them on the market. You can make one pretty cheap, as Howard Carrier and others have made and posted on this site. FFS is right the issue is at contact. We found one that would fall out at contact and that takes care of the issue that FFS posted.