[KIMFAB]

I've had good luck with a citrus based heavy duty professional cleaner from Ace hardware #1013325. The grease is easy it's that mist coolant stuff that is hard to remove. When cleaning the ways do as good a job as possible, remove the wipers, then move to one limit and clean again, move to other limit and clean again.

I then use Marvel Mystery oil or any high detergent light oil. Prime the ways, move to the other limit, prime again and keep going till it wipes clean, then work the way oil in in the same manner. As for the paint Acetone and Lacquer thinner will remove almost anything (including the oil in your hands, careful). I like to repaint with an epoxy base paint. Again be very careful the good stuff is a cyanide base, do it outside with a slight breeze, very toxic. Of course the best way is to completely disassemble.