Not at all, Baz; thanks for setting the puzzle. This means I'm entitled to a "joker" message so I thought I'd take advantage! I wonder whether Mr Grew will work out the scoring from when you originally put up the link or from when you amended it.
I've just put on the K421. It's from my Brilliant Classics big red complete Mozart box, played by the Franz Schubert Quartet of Vienna. It's not at all bad. In fact there are plenty of good things in that box to make it quite a bargain.
Mr Grew will (quite rightly) deduct 75 points because I edited the posting (even though I HAD to in order to restore the link to its correct location). He's a stickler whose finesse and homage to duty are boundless. But then he has to be, because if he wasn't we should all start complaining wouldn't we?
Sometimes, however, he has been known to exercise leniency - and we must not forget that he invented this thread (which, I feel, has turned out to be both entertaining and educative).
I'll perhaps post another puzzle later this evening.
Baz