If you saved the old hand you can try to duplicate its shape on the new one. Otherwise I try to save the old hand and just replace the spring with part of one of my daughter's bobby pins. I've got at least two fixed like that and so far, so good. They need to be staked in to stay.
With over 15 perCUSSIN' revolvers, I've been called the Imelda Marcos of cap & ball.
SASS#3302 (Life), SASS Regulator, NRA (Life), DGB#129
Wolverton Mtn. Peacekeepers (WA), former Orygun Cowboy (Ranger, Posse from Hell)