The hammer on mine is not aligned correctly with the nipple. It is too far to the left. There is what looks like carbon build up in the cap hole that hits the cap or is the hole made that way ? This rifle has only been fired about 200 times.
I tried the shims and got misfires, had to try two and three times to get the cap to fireHammer shim kit if you want to try them. Workd for me on a TC white mntn carbine.
We can't see how the lock face fits the wood. (lock panel) If you do any wood correction keep in mind where the lock/lock panel will end up! If it is a proper fit for in and out, I would bend the hammer. Place in a vice with leather protection and tweak it.