Replacing my points distributor

I think most of the platinum plugs say to not adjust the gap. Not sure why, maybe afraid you will mess up the center electrode. Copper plugs are fine to adjust. Info here and on slantsix.org about the best alternate spark plugs (hotter or colder). Be careful deviating on PN's or your plug could bump into the piston. Some tuners even clock the spark plugs to get the electrode at the optimum angle, but don't know if that is even proven to help.