distributor keep failing 3 in one year going on 4th

thanks for all the feedback .....the ignition is stock...coil new from napa 1 step up from stock ..new relay mod...all three distributer were new remanufactured ,,,first 2 slopy shafts cracking rotor and were questionable in first place....the third & latest was tight hardy no play [ compared to old ones,,,,,,

if its stock you have a points distributor, they require maintenance; you don't just throw them away when the points fail; you need to read up on points and condenser service, probably all you need, takes 10 minutes to change and the parts are under $20