Nice work, John!

I'm sure that the results will be positive, as the standard 103 shell is quite resonant. It's one of the reasons why the 'SA' with its glass fibre composite epoxy shell is so much better.

Could you do me a favour? Once you've got used to the presentation of your 103 in its 'nude' state, could you try adding some damping (Blu-tak or whatever) to the inside of the body shell and then attaching it back to the generator assembly?

I'd just like to know what happens, and if you end up with the same result as removing the shell

Marco.