Originally Posted by
maxtenet
I don't know about yours but all three of mine have the venturi held in by the needle valve assembly and this need to be removed for it to slip out. Mine interchange very easily.
Max
Mine too. Fiery posted that he had removed the NVA (needle valve assembly) back in post #16. That in mind, the rest of the posts make more sense.
My guess is that a metal burr or a faulty machining had caused the venture to be stuck. They are still great little engines.
George