Mike, I've been doing this stuff for thirty years. In all that time, I have seen a lot of jerry rigged units. If this were in my shop, I would take a hack saw to the black plastic very close to the chromed hose outlet. Cutting it off will gain access to the interior of the metal housing. Take a hack saw blade and carefully cut through the inner plastic pipe on two sides. Once through, a screwdriver will allow each side to be pushed in and slid out....your 3/4" threads will be available for the hose. I find it difficult that people are so afraid to try things, that might solve the problem? The fun of this hobby is in the discovery and hands on doing. Just me talking, Paul
www.severngaspumps.com