Regarding the vexed question of tuning: I'm going to put forward what no doubt someone far cleverer and more highly educated than I am (this is Mudcat, after all) will regard as heresy. Don't bother comung after me, as I am a very long way away, deep in my bunker beneath a very high mountain, guarded by a three-headed dragon; I don't feed her (for it is she; as any fule kno, the females are more deadly, the males just growl a lot, leaving the little lady to do most of the flesh - rending); we have an understanding: she doesn't expect to get fed, and I don't ask awkward questions about what she's eating or where she got it. But if you're feeling lucky... Here goes:
it is scientifically impossible (whatever that means) to tune s fretted instrument.
Discuss at whatever length seems appropriate.
John Kelly.