Actually, it looks like Davros was onto something.
Checking out the Cygnus-X1 site, it appears the old "Medical Reference Manual" was updated at some point, probably years after I bought my copy. Apparently some new pages were added, including a profile of the examination/surgical bed.
While not as not as I wished, it is better than nothing. Using this diagram in addition to the screen captures I collected from TrekCore, I should (in theory) be able to model a closer approximation of the exam table.
Still, if anyone has some more detailed illustrations, I certainly will not refuse them.