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I am interested in pictures showing how to release tightly-torqued or long-time-screwed-together components. As long as it is not bothersome for you.

For me, the extenders work like a carburetor spacer on an intake manifold: too thick, and you get great tone but lose response. Too thin, and the tone is not improved noticeably. I bought one and shaved it with sandpaper to get a balance that suits me very well on my 2-piece Imperial and Lexan Modified Helleberg 32.6 rim.

The extender has been useful in defining the sound concept. If I want to blend more with the trombones, somewhat like the role of a cimbasso, I’ll remove the extender. If conductor, principal trombone, and player are happy with tuba as a more distinctive, defined sound, the extender goes back in.

To Bloke:

By any chance did you ever get pictures showing how to release tightly-torqued or long-time-screwed-together components? If you haven't been able to I understand, you have lots of responsibilities with mouthpieces, gigs, fixing instruments etc.
I hope what I wrote doesn't come off as rude, mean, or snobbish. I just couldn't come up with a better way to word it.