I printed up the parts and mounted them to the old clamp plate that comes with the K40. This makes it rock solid and easily removeable. The only issue seems to be that not all ball chains are created equal. There can be a little slip on the gear heads. I find the chain slips when using the manual adjuster. If I pull on the chain, it works like a champ.
Bottom line, it is a great adjustable bed for the price of parts. I think I have less than $10.00 USD in it.
PS If you look to the left of the bed, those are parts for making an adjustable laser mount. Pics to come!