My "new" 1981 Clubman 1275GT has just got home but its got a few issues. The front left caliper sticks but I'm ordering the parts to rebuild it, and there's a loud squeal for about 30 seconds to a minute upon startup. It doesn't always happen but it's fairly consistent. It sounds like it's the alternator bearings, which I'm not sure is serviceable. Can just the bearing be replaced, or should I buy a new alternator and probably upgrade while I'm at it? Thanks!
-Austin