The finickiness AKA instability of the Scottish neo-“Border” chanter vis-a-vis the uilleann chanter, older Great Highland chanters, new Great Highland chanters, and cylindrical Smallpipe chanters is a very interesting thing.
I started this thread on that topic a while back
Ideal stability versus ideal instability - Bagpipes (Non-Uilleann) - Chiff & Fipple