This is some fun!
I thoroughly enjoyed all your posts!
Sorry I took so long to get back. I'm installing a bathroom, shopping for a car and have been very busy at work.
Anyways....
It's not the support foot that David took a picture of. And it does look like an "E" or an "M" depending on the orientation.
I've taken a picture of it, but I don't think I can include it since I don't have a .mac or webpage to link to.
If anyone can help, I'll email it to you.
Also, for as small as it is, this thing has a part number.
It is 815-1406 REV B.
I "Googled" it – but no luck!