I clean my machines once a month with WD 40 and leave them wet. As time goes by you will wear parts down in the slide area and oil will fill the gap and lesson the play. WD 40 seems to be the best lube for the tight tolerence and cleans parts perfect. I don't mind repairing my machines for you guys as long as there taken care of. Resold machines and trades I don't mind going through for guys who need help. Cary