Brian,

Thanks for posting the pictures -- they are a BIG help!  ;D

I haven't gone quite so far with the supports (yet).  So far, I just built a new table.   It's in the garage where I'm putting on the finish.

Since my table wasn't broken, I used it as a template to cut new pieces out of 3/4" hardwood (oak finished) plywood, and I took a router bit to the edge.

While checking out the fit in the trailer, I made a new discovery!  

The short support leg appeared to be about 1 INCH too long!   This led to about a 1" gap between the table and the horizontal support post on the door side of the trailer.

Since I used the same hardware, and the table is level in both raised and lowered positions, I believe the original table suffered the same fault.   I'll attach a photo here.

So the final step will be to add about 1" of pine furring to the top of the horizontal support on the edge of the dinette seat.   The alternative of shortening the leg would also lead to moving the mounting hardware on the bulkhead below the front bed to keep the table level.  Not my preference.

I'll post a URL to the completed project when I'm through.

Jon