I bought a 65.4 AIO recently, as soon as I had the stand together I was concerned with it. i put the aquarium on the base and immediately noticed the side to side sway. Contacted WB and they made me send a video of the swaying and a photo of the sticker inside the stand. They just notified me today that they are sending a reinforcement kit. I will install it but I already cut a 3/4" piece of plywood for the back. I am going to use self-tapping screws to screw it right into the aluminum profile. WB just needs to own up to the design flaw and include the kit with the stands.