RE: RX cooling
None of the Hitec 2.4 Rx's come with what Hitec used to call Rx blankets. I don,t know if they still package them with the 72's or not been a few years since I have bought a 72.
Insulating a Rx in climates that routinely reachs well over a hundred unless you keep the airplane out of the direct sun at all times between flights is a really bad idea, I don,t care what type or brand Rx and if its a 2.4 well thats a no brainer don,t do it. Heck that does even address the batteries and losses the guys never figure out or why their batteries suddenly seemed low. putting any electronics or batteries in bake ovens is a rotten plan.
John