Springs For Rossi 462 Snubby?

[The Mighty Beagle]

Wolff doesn't list any for Rossis ... can I substitute any other springs?

I like the gun very much and the SA trigger pull is fabulous. However, I would like to lighten the DA pull substantially, as I find it much heavier than necessary. It really gets in the way of accurate, one-handed shooting.

Thank you.