With any of these machines, Innova and Gammil in particular, how does one tell how much use they have had? Is there some kind of hour meter, or stitch counter? I've seen stitch counters mentioned in other brands at least. Surely there's a way to look at a used machne and know if it's had the bearings run off of it in a production or business enviroment vs some private owner who can just afford one and does their few quilts at home (low use). ?