Hello Michael,
I have a flat-cut Kingfisher 20 sail, if that is any good. Not one of the original Hasler ones, it is a Sunbird sail. 5 panels, in sky blue. Is this any use to you?
Free to a good home, so you're welcome to pick it up (Devon) or pay for me to courier it to you.
Let me know if you'd like me to measure it.
(I see it is in my little photo here)
Chris