unkl300d, Yes I was referring to the climate control servo. Mine doesn't have the mono valve.

I could mail that chrysler (Imperial I think) part back to chrysler. But their people might get the bright idea to reintroduce this part to some of their new models, which would NOT be a good idea. I better let this part fade into obscurity where it belongs.

I will repost to this thread when I get around to replacing the servo unit with a ball valve. But right now it's much too cold to think about that.