I left the way oil on the ways cause it's dark and accentuates the galling. I'm preeeeety sure it's from the previous owner, I hope. I try to keep everything clean, but, you know.... What would you guys do about this? I had taken a stone to the ways when I got the lathe to at least remove any burrs. It's hard to keep things clean. When I oil the ways, after some use, the oil always turns black, which to me would be a sign that things are still grinding... Suggestions?