I just got my Gen 4 G29. Brand new. I love shooting it. But I'm having the same problem as I do on my Gen 3 G20. The slide doesn't stay open after the last round is fired. This was a brand new gun. I fired 100 rounds maybe. Everything is stock on the 29. Is this a coincidence or something I'm doing? Like limpwristing or the opposite I guess would make more sense.