Swapping S and W triggers and hammers

[fuzz]

Hello folks
I have to pick your brains please; instead of milling down my TT and TH on a Bangor Punta variety, it has been suggested to me to swap with the standard T and H instead. So my question is, is this a drop in or does some further work needed to be done by a smith?
Thank you in advance.

Dwayne

 

[bearhunter]

They should just drop in, but not always.

Swap them out and do a bit of dry firing in double action as well as cocked for single action, it will either work or it won't.

That would be the first step any competent smith would do.