John, We have mostly G23's and some G22's. The problems have been with the magazines. First the mags were out of spec and caused the malfunctions. Next they gave us new mags w/ the wrong springs. After they replaced the springs our glocks have been good to go. I'm not a Firearms instructor anymore so I did not deal with the Glock rep, not sure of his name. If you want you can give me a call at work. I work 11-7 on the east coast. Sorry I am just replying now. Just saw the message. Be safe out there brother.
Sgt. Bob Shreders
Darien, CT Police Department