[Bob Ashlock]

I do have those little suckers O-ringed, although these early carbs don't seem to have the depression area to accept an O-ring. (I had read or seen that the O-ring was something Weber added later.) I think I already tried swapping the mixture screws amongst the same carb, but did not compare them or swap them with those on the other carb so I suppose that's an easy one to try!