Hey all...Took my CZ75 Shadow Custom (bought here on the forum) to the range for the first time today. Gun shoots way better than me. Anyway, I had a couple of intermittent issues with the slide releasing when seating a mag. Gentle seats were fine but if I seated it hard like you would in competition the slide would release and chamber a round. Mechanically everything looks good to my fairly untrained eyes. Thoughts? TIA.