Need advice, rebuild or replace distributor ??

Hi I have a 65 Fury 3 with a 318 poly motor. 112K miles, all stock and original. my distributor rotor seems to be eating up the Center contact on the inside of my distributor cap. Underneath Where the coil wire plugs into on the top of the cap. The top metal contact of the rotor wears the graphite or carbon contact down and even starts to grind into the cap.the last 2 caps only lasted maybe 1000 miles each. It was a stock points dist. But was changed over to a Pertronix electronic...

Need advice, rebuild or replace distributor ??
Author: 65GUS