After looking at your pictures I wouldn't do anything. Nice patina. Makes you look like a real tripper.

Generally before and after trips, look close and if you see anywhere you think the core could get wet, repair just that area. Think of the core as a cardboard box that's taped closed. Pretty stiff, if the cardboard doesn't get wet. If you think the core is, or was wet, let it dry a good long while before doing a repair. If the core ever gets wet and starts feeling spongy in that area, look for some experienced help before replacing parts of the core.