Miriam, I still might want one of those tables when my son is traveling your way. It is bigger than I had imagined so I need to think about it. Right now my 301 is in a Kenmore cabinet I picked up for $1.
As far as the pad staying on - I found a package of heavy duty Velcro that is one side stick on and one side sew on. A strip of that on both the top and bottom of the slide on pad and it wouldn't be going anywhere.