Thank you for your review. I am thrilled that you are happy with the product. Regarding the issue with the screw chipping the edge, it is important to place the screw in the middle of the cavity, if not the screw, if on an angle, can touch or damage the lip. If any edge is chipped, the next panel should cover it and will no longer be visible.
I will be sending you a private email to discuss this further as it is my goal to ensure your installation is correct and simple. Talk soon!