I was worried about the condition of all that stuff I got. But I realized that when I removed the old paint and all the dirt, there was a lot of beauty underneath. Sometimes it's better if nobody has cleaned it for decades because the surfaces under the dirt are untouched and in good condition. Of course there is always the problem of corrosion...

People say that Aluminum doesn't rust. That's nonsense! Maybe it takes longer, looks white instead of brown and has another name, but the result is the same. I have filled a couple of corrosion holes in the outer skin.
Aluminum corrosion makes the metal blow up, it gets thicker. The forces are impressive, it's able to split the multilayer windows!