I recently bought a nexstar 46 RTF. Can someone please tell me what the reason is for wrapping the Rx (and Rx battery for that matter) in foam? The only reason I ask is because i've been running 1/5 scale onroads, offroads, and boats all with gas engines with the Rx's fastened by double sided tape and the Rx batteries by velcro straps. I have never had any problems. One time, the Rx in the boat actually fell off the tape while running and was bouncing around inside the radio box and still not a problem. Now all of these vibrate a lot when running. Im sure a plane doesn't vibrate any more than my other r/c's. So whats up with the foam then?