Sarge, reading from the start your problem is that they changed from standard to metric fittings after this three year span, right? Edelmann makes a full line of standard to metric adapter fittings, available on line or at any good auto parts box store. The listing from O'Reilly's - List: Hydraulic Brake Fittings | O'Reilly Auto Parts
You can get any disc/drum valve that fits, and for a few bucks adapt your standard lines to a metric body.