Brought the wings up from the basement after over a year of work on the fuselage. I noticed that there was some corrosion due to the contact of the wing stand slings and the aluminum. Must have been due to the humidity and the rug holding moisture.
Sanded, preped and AZKO epoxied primed the skins that had corrosion to prevent any further damage. Looks like the thin layer of aluminum and some minor pitting of the skins.