PB,
Do you have the original spring? If you do, you could look at the on line catalog for Dixie Gun Works. They may not have the exact spring, but one that would work with some tweeking. As far as makin one, there should be someone in your area. Contact some of the local muzzleloading clubs, and riflesmiths. Hope you have the original spring as it will make it easier.
Flintlocks Forever,
Lar :thumbsup: