The repros on both of my cars have given very little trouble, except recently the 11B was running poorly, sounding like one or more of the carb jets are plugged. I rebuilt the fuel pump (AC) several years ago with a kit from before ethanol in petrol so I think the rubber of the diaphragm might be breaking down. It’s winter right now so it will have to wait until a nice spring day, sun is out, beer at hand. Yes, a pleasant way to spend a day.