I've owned Sports since 1982 (crikey, that is a long time ago, still feels like yesterday!).

Mine only got twangy when they needed lube.

They are "snappy" in factory trim.

That is clearly not a bad thing, given their dominance of FT before the 77 came along and redefined the genre. They do boing about a bit, but they hit what they were aimed at.

As I am sure you know, they have colossal pre-load. So, if happy with a gun running at less than "maximum legal full hunting power", my thought would be to lop off a couple of coils from the factory spring.