ive read some people say the metal on some of their transformers has tarnished. what are the causes, symptoms, or your known remedies associated with this problem?
Usually age, what kind of environment it's in. if it's in your house in a climate-controlled room, it's usually not something to worry about. In my own experiences, I've found storing them in garages, basements, attics, etc usually leads to the toys degrading. Hope that helps. As far as how to fix it, no clue
The 'cosmic rust' on MP megatron just seems to develop randomly and spontaneously, regardless of lifespan or storage conditions
