The holes are the perfect size for the pixels to fit without to much pressure while keeping them tight. Tha layout was also spot on. I did have an issue mounting it however, I clamped it to the top of the pole for the tree (3/4” emt conduit and found the bottom pixel was in the way. I’m new to this hobby so I wasn’t sure if this was the correct way to mount it but I couldn’t see any other way so I just pulled that pixel out and attached it directly to the pole- problem solved.