undeadchew that same lower I'm complaining about also refuses to do operate with my 22 upper even though it has the bore buddy trip sled. It will shoot one round, load the next round but will have a dead hammer . And in semi it shoots fast and flawlessly. Maybe your right, because I'm starting to think that lever or something is causing resistance while on middle/SS mode. Thanks for all the help guys I appreciate it more than you know