Finally after much effort and sage advice on here, the thread below was particularly helpful my thanks to the OP
https://forums.chiffandfipple.com/t/taming-the-dreaded-susato-beast/41162/1
I finally ‘got’ the dread Susato I had and went from hating it to playing it almost exclusively (S Bore Kildare High D)
The one small niggle I still had was a slightly nasal, sour quality in the lower register, but as the whistle was superb otherwise I ignored this.
Anyway a couple of weeks ago on Ebay someone listed a ‘Black Plastic Whistle D’ this was in fact a slightly tatty, scratched S Bore Kildare High D, minus thumb rest and case (it was in a Dixon case actually) As it was only ten quid, carriage paid I thought it would do for carrying in my rucksack.
Turned up a couple of days later, and I noticed a few superficial differences from the one I already owned, the gold Susato logo was higher on the head piece, the tuning tenon was different, smooth apart from a single groove with an ‘O’ ring, and the ‘E’ hole was noticably smaller.
However after a few minutes playing it was obvious that it’s a much nicer whistle than my other, not quite as loud, but still louder than most whistles, upper octave is a little smoother, less shreiky at the top and the lower octave is lovely, NO trace of that nasal quality the other has.
I’ve examined the head closely and can’t see any discernible difference, so why does it sound so much better?
And can anyone tell me from my description roughly how old it is?