On the bumper, I didn't think the four gun/headlights were special enough to keep, so I soaked the whole thing in isopropyl alcohol. It'll be easy enough to add an Autobot symbol if I choose to in the future. The hardest part for me was the chest plate. I couldn't easily remove the clear plastic windshield, and it ended up cracking from contact with the alcohol. A similar thing happened with my Prime, though it didn't completely shatter the plastic.