Try and waterproof anything electronic and just make sure you dry it off and matain it afterwards. Blowing it dry and spraying areas like bearing/axles down w/ WD40 will help it survive and not rust up. If you want to Plastidip your servos, just dip them in slowly until they are completely covered plus about an inch of the lead wire. Let it dry overnight and carefully trim around the servo gear. Apply a little grease around the gear, re-assemble the horn and install. Balloon the reciever and battery pack, and you're all set.