So I finally got around to pulling the blue protective coating off the wing skins and this south Texas moisture left several areas of surface corossion underneath. Locally they only sell gallons of etch and alodine for over 100$. I probably only need a cup of each. Question is, is there any other method cheaper for getting rid of the corossion. I found that red scotchbrite takes it almost completely out.
Still kicking myself....
Still kicking myself....