I have an older model Lyman Great Plains rifle.
Just received a new percussion lock from TOTW.
Removed the original lock from the stock and tried to put the new lock into the recess. It doesn't fit. I don't know exactly what it is in the new lock that is keeping it from fully seating into the recess inletting area. It could be in the area of the tumbler or the brindle.
Don't really want to remove anymore wood to seat it properly. I guess that I will use the parts from the new lock and use them as needed in the old lock.
Has anyone dealt with this problem before?