I was not as lucky on the feet for mine as they cracked and fell out. So we found rubber bumpers. Here is a link
http://www.bing.com/images/search?q=...lectedIndex=53
Just in case the link doesn't work!
Figured others might have the same problem and it might help. This is what they looked like and I found them at an ACE Hardware but only one in my area, the others did not stock them. I did have to glue them on to keep them from coming out when folding up the case but they work pretty good.
Good Luck on the tension!
Lisa