The old floor model Rockwell I just purchased had been sitting unused for a few years. The lathe seems to run fine, but I thought perhaps some fresh lube on the head stock couldn't hurt. Checked the manuals. Nothing about lubrication. Is some sewing machine oil ok? does it require something heavier? Is their a possibility that any lube could screw it up? I put sewing machine oil on an old PowrKraft lathe headstock bearings and it still runs better than when I got it.