If you have uneven wear or light scoring on the lobes that you can actually feel sometimes you can smooth them out using a stone, then polishing. It's important to keep everything on the same plane. Think of this as increasing the surface area of contact. Yes you will be removing a few tenths or more but it may be the lesser of evils.
Often stuff like this starts during long periods of storage with temperature changes. Inside a motor you have a micro climate with condensation forming acidic water droplets that hang off certain areas and attack metallic components by etching into the surface. This is what may have caused the pitting you see.
The only way to prevent this is regular oil changes, storage at a constant temperature and possibly adding a moisture absorption device or packet. Starting the motor or at least turning it over often will circulate oil and preserve your precious motor components.
Often stuff like this starts during long periods of storage with temperature changes. Inside a motor you have a micro climate with condensation forming acidic water droplets that hang off certain areas and attack metallic components by etching into the surface. This is what may have caused the pitting you see.
The only way to prevent this is regular oil changes, storage at a constant temperature and possibly adding a moisture absorption device or packet. Starting the motor or at least turning it over often will circulate oil and preserve your precious motor components.
