What happened with that private sale old wee near to you, oldie? Gone? Sounded good, that did.
The new wees don't seem to have the turbulence issues, and if you got the lower seat, bung the original on ebay, it'll reduce the cost of new seat considerably (so to speak). Change the dogbones - presto!
Or modify an older wee in similar vein...you have the knowledge now, not like your starting from the beginning with the wees! You could evenhave a go at reducing the seat height yourself (as others have done Locksmith?Willbo?), put in a heater element and gel! The world is indeed your (pink) lobster then...