Isn't it weird how instruments have funnly little quirks about the way they play? I've always been a bass player so can only speak about that, but it seems like a thousand instruments all made exactly the same way, will all play differently. My first Eb bass - Massively flat on middle C, except if you play it on 2+3. (Which should flatten it further, shouldn't it? :? ) My 2nd Eb bass - Middle G horribly sharp unless played on fourth, or 1+3, yet all other open notes in tune. Current BBb Bass - Middle B natural massively flat on 2, better on 1+3 or 4, (Which again, should flatten it further) but all other 2nd valve notes as near as makes no odds. Except low D-flat which is the opposite, being always sharp! Confuses the bejaisus out of me. Anyone any similar experiences? Is it just Basses or do we have quirky cornets and other things out there?