Was shooting my flintlock yesterday and suddenly noticed the flint was gone! Searched and searched the area without finding it. Fortunately, I had more. When I replaced the flint, the first time I fired, it failed to ignite the powder in the pan. I tried to square up the flint and align it as squarely as possible with the frizzen, fired again and the gun fired, but a small flake of flint was in the pan after the shot. I am very new at using a flintlock, and wondered if there are any tips or pointers I need when it comes to replacing the flint properly.