You sound more paranoid than me!
(And that's saying a lot).
I know when you create a tune and load it into the PCM, the unit creates files containing that tune and all the custom options you've entered. And, I know you can download that file, so Bill can look at it if there's problems. It seems logical, doesn't it, that the stock tune copy would also be in a downloadable file? Bill would have to answer that.
Trouble is, what could you do with it once it was on your PC? I don't know that it's something that can be reloaded to replace a corrupted stock tune file on the Gryphon. But, maybe that's possible too.
- Jack