No sir, it's an inadequate explanation, the authorities won't explain how it works, so what faith can you have in such a system? I like to *know* how things work if I can, there's literally no reason for not making this available, unless.....
And your figures are surprising, because every anecdote I've read, and comments from other clubs around here, is that PCC hardly ever moves. We used to have between a third and a half of our medals move CSS, this year we haven't had one single PCC adjustment, so nothing like the same, and even in opens I think I've seen 2 all season, though I'd have to double check that.