This image shows the hook gap, and how the hook attaches to cord loops on the bag. The gap must be within a specific width tolerance. If it's too narrow, it's too hard to connect and disconnect. Too wide, and it's too easy to remove. In our initial production run, the hardware gap was too wide on the metal hardware and too narrow on the plastic hardware. While it may have been unnoticeable to most users, it did not meet our stringent standards for strap attachment strength and security. So, we're getting these parts retooled.