I was just reading something from New Zealand about Pedersoli flint locks, a land with a large amount of Pedersoli popularity. The article mentioned how the Pedersoli hammers have relatively smaller jaws which may necessitate grinding down the back of the flint to make it shorter, so it will fit and function better. It didn't mention any particular Pedersoli model, and didn't seem like a serious problem. Maybe they don't have access to every flint size? Every gun is unique, but there are many experts out there who can help you out if you ever did have a problem.