I have a 99, which is the same machine in almost every way. It should run smoothly and is very well behaved. I too had to work with new feet for the base, a lot of oiling, cleaning, and more oliling before it was up to standard. I placed furniture felt under the base to stabilize it, the original rubber feet was gone. Cabinets for 3/4 sized machines doesn't turn up that often, but the cases do, usually with a 99 or a 128. My 99 came in a bent wood case and the base is very good, however, a DIY base can be just as good.
The base can sometimes be polish up with resin based car polish, and another way to revive shellac is in
this thread.