Bill_K,
After I typed out my response, I looked at your reply again and thought I may have read your post wrong. I don't see how the platter bearing could cause a scraping noise like the OP describes. (I'm not saying you are wrong. I may be overlooking something.) On my VPI's, there's no grease but they do have a light coating of oil. I find that if I don't clean it, things like dust and lint stick to it. The design of the arm is so sensitive, I thought a little dust may knock the cart out of alignment.
After I typed out my response, I looked at your reply again and thought I may have read your post wrong. I don't see how the platter bearing could cause a scraping noise like the OP describes. (I'm not saying you are wrong. I may be overlooking something.) On my VPI's, there's no grease but they do have a light coating of oil. I find that if I don't clean it, things like dust and lint stick to it. The design of the arm is so sensitive, I thought a little dust may knock the cart out of alignment.