> little worried it might touch the metal.  I feel like I need to
> wedge some
> insulating material into the space between the adapter and the side
> of the
> metal cavity, but I'm not sure of what I could safely use.

cheapo generic rubber floor mat. cut into appropriate pieces. :)

> I'd also like to ask the length and width of the small table - the
> one that
> attaches up front.  I think I can make one out of scrap countertop
> material
> instead of paying nearly $100 for one.

if you're going to go to the trouble of making one, why not make it
the size YOU
want?

but from the etka pictures, the flip-up side table is 686mm x 500mm
(27 in x 20 in)
<that's the brown early-vin size, and the grey late-vin size.
interestingly enough,
the middle 1987 grey size is 690x500. oooooooh. :) >

the swing-out/swiveling front table is listed as 600mm x 400mm (24 in
x 26 in) ...
longer and thinner. go figure.
the swing-around rear table is listed as the same size ... up until
the 1985 models.
then it becomes 690mm x 500mm (still right at 27 in x 20 in).

good luck!
unca joel