Hi CDer
Check this post, and keep it for reference - if you need to troubleshoot anymore issues.
http://forum.beoworld.org:80/forums/t/12646.aspx
In your particular case, I would do 2 things to start:
1. Replace the belt - contact user Dillen for spare belts.
2. Remove the platter, and the axle which fits into the vertical socket on the chassis. Wipe off all the old oil on the axle, and in the vertical socket. Squirt a few drops of sewing-machine oil on the axle, and in the socket. Replace the platter, pushing firmly down at the circumference - it should level, and enjoy.
If there are any more issues, post a question in the BeoGram forum on this website.
Menahem
Learn from the mistakes of others - you'll not live long enough to make them all yourself!