Not at all mate. Every day's a school day😊.

I know little to nothing of the giss system and the seals of those guns. I've had the main popular Diana's apart such as the 34 and 45 also the 50 and 50T01, and I'm fairly up to speed on the heads on those (indeed I'm hopeful of swapping over to some Vortek seals soon on a 45 and 50T01).

But I was worried for a moment there that there was an issue with some of the seals that I wasn't aware of. You've put my mind at rest.

Intrigued that some 27s and 35s may have factory synthetic seals though. I personally think it was a backward step by Diana holding on to leather seals for so long. Walters also made this point in his book too.
Dave