Two really easy ways to do the servos that I prefer. First, plasti-dip. Get it at Home Depot, Menards, Lowes, wherever. Dip the servos in it, hang them up and let it cure, then cut out the servo horn. Second way is the fastest and maybe the cheapest is to wrap electrical tape around the top and bottom seams where the 3 pieces of the servo case meet, and also iver the servo horn, making a slit for the horn to poke through. For the radio and battery pack, I use party balloons. Just stick them inside and then either ziptie or tape the opening shut.

Easy.