Ted,

Get yourself one of those BUTANE SOLDERING IRONS, I bought one about 10yrs ago, and I still use it all the time. It's way better than those "inductive" Cold Heat units, just watch out were the exhaust port is, and keep it pointed away from your fingers (it's REALLY HOT)!
On your ESC/BEC, could you mount it where it could get some air-flowing over it, I stuck mine where there is a contant current of air flowing over it (from the blades), keeping it a cool 95 to 105 degrees, only the 15c Lipo packs run hotter (no air-flow under the canopy).

Rick