I got a brand new in the box example out of my stash, a blue one with the metal rear needle valve bracket, and it measured .282" out of the engine and the blank spray bar measured .140" I think?? I had a brand new LA.40 still in the original box and wrapped in a bag and pulled the venturi out and measured it and guess what it was?? The same as the .46. This was a later issue blue one with the metal bracket also.
HAPPY EASTER!!
Dan McEntee