Ok, this july I got my hands on an Overton Goldie soprano D that I don’t play as much as I’d like to. And the reason for that is the high level of backpressure. The whistle is beautiful sounding and all but I feel the backpressure is setting limits for my playing and I don’t like that. I catch myself rather picking up my generation with feadog head all the time rather than the overton,. And, since I know it’s hard to get the hands on one of these I thought it would be better letting it go to someone who enjoys it’s qualities. But, I would rather trade it than sell it as I fear money will go straight to the chocolate store (I love chocolate).
You are free to offer me whatever whistles you have got (with somewhat equal monetary value of course, I suppose trading it for a generation would be a bad trade 
)
And, please ask questions if you want!