Tough to tell exactly what is going on from just photos instead of actually holding the piece.., but I think a properly hardened frizzen coupled with a strong spring should cause the lock to "eat" flints, not gouge a frizzen like that due to strong frizzen springs.
Sometimes folks think the "feel" of the frizzen spring is heavy or too heavy, when the problem is the frizzen-cam, the piece of metal on the frizzen that contacts the spring. When the cam is not properly rounded and polished, the increased friction makes the degree of resistance higher, and thus the spring feels stronger..., this can sometimes also be caused by the cam simply being too long, requiring too much depression on the frizzen spring. The surface of the spring where the cam comes into contact should also be polished. The wear on the frizzen face looks a bit like the frizzen is rebounding, so the flint is actually contacting the frizzen, losing contact, contacting again, losing contact, and then making a third and final contact. Sometimes this too is due to the cam geometry.
Warning..., rounding and polishing of the cam should be done by a person who knows what to do and has done it in the past. If it's done wrong, you could end up having to replace the whole frizzen.
The angle of the cock might be a tad off, but I'd suggest you invert the flint to bevel side up, and perhaps put a small chunk of lead, about the diameter of a piece of standard spagetti, under the flint, at the back, next to the cock screw, to raise the back end of the flint, and thus angle the front edge of the flint downward. It's amazing what just a few degrees of change can do for a lock. This is an easier "fix" or adjustment than adjusting the angle of the cock.
LD