RE: Radio Glitches
Metal to metal vibration will kill an rc car radio. I've seen it so bad that shrink tube had to be put under the springs on throttle/brake linkages to stop it. A couple of things to look for before you get into the finer points. Make sure both crystals are in tight and make sure your antenna wire is not pinched or laying against any metal or graphite parts. If it's even close to these things put it in some fuel tube or shrink tube. Take a look at you linkages and see if you can take any slack with some short bits of fuel tube. The idea is to take as much slack out as you can and still get acceptable throttle and brake response.