I'm not trying to keep old parts, I was just trying out if cleaning helped anything. The cap looks like new, does it still means it might be bad?Why are you trying to keep those old worn out parts? That ignition stuff has to be in near new condition to work as good as they work (not so good). Cleaning burned or carboned points never works. Cracked dist caps were fairly common in the old days. You can't even see the crack unless you have super human vision. Give it a real tune up and it should run like it was supposed to. Good luck and enjoy that nice '70.