Ah. Job well done!
Oddly enough (he said, seriously, which was odd indeed), we may have reached a point where we have forgotten some of the basic stuff but are too embarassed to ask it cause we’ll get sent to the archives and know it must have been covered. Which, by the way, I have yet to figure out how to successfully search. I gave up a long time ago. My way to search is to ask someone like Waldski who knows how to use it for a link. When I search, I get 3 million hits, like the entire archive. Lots of reading, Ill tell ya.
I received a whistle in the mail the other day that had a tall but narrow airway (curved). Since baseline was the relatively thin flat gen or Feadog one, I was thinking about asking what led the builder to design it that way.
Also, whether I could now tweak it.
But (sob) I am too embarassed to ask.
Oh, you can always tweak it (theatrical laugh) 
The question really is, can you tweak it successfully?
It sounds like you might be able to use some of the techniques Jerry uses for Clarke originals or Shaws. Now I’m curious - what whistle is it?
A secret.
Actually, I refrain from chastising newbies about using the search function for old topics because I don’t find it to be particularly useful. I pride myself on being able to come up with the little cluster of keywords that will make google.com give it up. But, the search function on this board is very difficult to finesse.
Dale
Ah yes, well done, Dale! 
Don’t worry, these things are cyclical. This is not an online whistle encyclopedia, it’s a community.
Our love of music traditional,
propels us to play,
the old tunes,
Again.
Tune or Topic
each session’s setting
bring freshness
and life.
Especially when some of our compatriots spell even worse than Lark… :roll:
Robin