Move the venturi down another 1/4 so that it is well on the backside of the curve.  Let the tube come through the curved sheet, cut it at a 45 with the opening pointing to the rear.

--
This is by far the hardest lesson about freedom. It goes against
instinct, and morality, to just sit back and watch people make
mistakes. We want to help them, which means control them and their
decisions, but in doing so we actually hurt them (and ourselves)."