The 40.5 has a nice table, but 2 faults. One, it is held on only by the compression post bracket, and two it has no support at the far end, causing it to sag, expecially when leaned on. I also found that you could never tighten up the compression collar tight enough so that the table wouldn't swing when knocked sideways. I ended up making a removable support leg for the far end which screws in underneath. I used a standard aluminum extension pole, (from a hardware store), and made a small flange the other end screwed into under the table. Next, I picked the optimum height, and drilled a .25" hole through the table mounting collar through the compression post. I attached on a tether a removable stainless pin with ball bearing spring end. So now the table cannot rotate. To put the table down for a bed, you pull the pin, release the compression post table clamp, lift the table up 2 inches to remove the suppurt leg, and then drop it. By the way, I again reitertate to 40.5 owners to ensure there is a drainage hole in the bottom of your compression posts. If not, drill one now, and stand back, cause there's likely a bunch of water in it.