I don't know the exact model Meopta enlarger you are thinking of, but having owned two Meopta enlargers over the years, as well as a dozen other types of enlargers, I have yet to see anything wear out, other than the globe, on any enlarger I've owned.

Both of my Meopta enlargers were able to be swivelled on their base, allowing floor enlargement, on top of that their head could be swivelled sideways to allow for wall enlargement.

Generally speaking the size of an enlargers baseboard, seems to be a good indicator of the maximum print size in standard set-up.

Mick.