[Gogar]

Thank you Guys.

Milt, I had considered bolting it down, but haven't made that confused trip down the 'fastener' aisle yet. What's the thing to do, at a (not buy new tools) cost?

(edit) just read 81TP's post.

This wall isn't carrying any load, but I agree having it not move front to back would be nice.

A thick layer of waterproof grout sounds pretty good to me, too.

Thanks