MS Natural Ergo Keyboard 4000 Sticky/Stiff Spacebar Fix

I bought a newer MS Natural Ergo Keyboard 4000 to replace my very old
white MS Natural Keyboard Elite.

I was very disappointed to find that the space bar was stiff or
sticky. So I searched the web for all the possible solutions.

Here's what I found and tried:
1. lubricate plastic posts on underside of key (didn't work)
2. twist metal sway bar away from each other slightly (acceptable)
3. remove metal sway bar completely (acceptable)

I took pictures of the procedures. Here's the gallery -
http://www.paulstravelpictures.com/M...-Spacebar-Fix/

Hopefully this will help some of you that have this keyboard.

Cheers,
Paul Michaels
Ft. Lauderdale, FL