As far as rain and the servos, reciever goes...a trick I learned from running the Monster Pirate(4 wheel drive, 1/8th scale MUD EATER) is to get some #9 round balloons and feed the servos into those.If you get a bag, it may take a few tries till you get the hang of it. Naturally, the end with the wires comes out the stem. Take a pin and poke where the shaft comes up for the control horn.(stretch the balloons well first) A dabba silicone, a pull tie and your set. Do the same with your reciever..it works great!