Mark, thanks for the info. I confess I'm surprised that you didn't jump all over me for my third valve "B's". I've been told I am bad. But I once met Rex Stewert, who watched me (politely) for a moment. He asked where I had learned that trick on "B" in the staff, then he said "You're in pretty rare company, Bix Beiderbeck used todo the same thing" Good enough for Beiderbeck, good enough for me.