The points can be burnt as a result of bad condensers. I would replace them too.
Never had new points not fit over the post. Having said that ,I haven’t installed many new sets cause I am cheap. Usually I dig through my bin of salvaged points and clean them up. Drilling out the grommet sounds like a bad idea.
I have heard many complaints about sierra parts, and a few about the Turkish made oem parts.having missing insulator .
