Sorry for the delay. This has been a drag, and I’ve managed to burn up the emitter. :_(
I have had lots of trouble trying to access the emitter area, but TomE did write up a great tutorial.
Expectation:
Reality:

Guess it got too hot to cook the anodizing.

If you look carefully at the LED, you can see that that plastic retaining ring melted due to the sheer heat from my torch.
And I still haven’t opened it up… sigh.
I had access to a strap wrench briefly, but had to return it.
I even tried a cyanoacrylate (Loctite) debonder where the two pieces met, but the o-ring prevented it from getting into the threads.