I saw an instructional thing about that. They did it with a bit of silicone tubing the same diameter as the original, and a steel nut with matching inside diame

I saw an instructional thing about that. They did it with a bit of silicone tubing the same diameter as the original, and a steel nut with matching inside diameter. Swap out the tube and screw the nut over the end. I'm not sure you could actually make it work upside-down without crimping, but at any normal usage angle it works great.