I had the same problem with that a5.
I used denatured alcohol and a stiff tooth brush to clean it up good. Then I just "chased" the checker and cleaned it up. I used checking tools and I made all the v's deeper but stopped short of "pointing". Completely fresh check would have looked out of place on a 60 year old gun.
I used denatured alcohol and a stiff tooth brush to clean it up good. Then I just "chased" the checker and cleaned it up. I used checking tools and I made all the v's deeper but stopped short of "pointing". Completely fresh check would have looked out of place on a 60 year old gun.