The locks need new swivels as the spring is coming below the lock plate when in the fired position .
Not certain that is a problem with the swivels. This may have occurred in the switch from flint to percussion. Not certain what all was changed in the conversion, but normally on a lock of this type the tumbler should rest against a stop which would prevent the spring from expanding to this extent. Perhaps this gun is early enough that "Flaw" had not yet been worked out & the flint hammer itself stopped the motion.
With the locks off the gun as shown the percussion hammers are in a much lower position than the nipples would allow them, so not likely the spring is hitting the wood when the locks are mounted. While this is not an Ideal condition it likely would present no problem in actual use. Not likely of course the gun is going to see much use. anyway.
