The green hose ends should touch - I don't see how the rubber could constrict the flow if it's stretched around the hard plastic. If it doesn't seem right, use the bigger one and get it on a few inches. Mine's been fine for about a year.

-Philip Maynard '95 Contour [71 STS | Track Whore] '97 Miata [71 ES | Boulevard Pimp] 2006 autocross results