Ah you gave me a clue. See the pic. I was able to un-thread the small section. I see a small gap that I can try and close with a vice.
I removed the o-ring that was causing the two pieces to stick, and it has more bite now. I dont have high hopes, but will try it out.
Are there any super light weight and safe adhesives I can use. The parts appeared to be pressed together and are not machined to be a solid piece.