These garden beds seem very flimsy at first, but as you put them together, they get quite a bit better, and I’m sure once I put dirt in them, they will be even more sturdy. Since I am a HVAC technician, I already had a pair of seamers meant for flattening, bent or uneven sheet metal. They are perfect for the corners that are bent. They might bend those purposely so the pieces don’t slide and cut right through the box. I put only 3 to 4 screws per joint and left them just a tad loose. This way I could even up the pieces at the top, then tighten them fully. I have two done and one to go. Picture of beds and seamers attached