Brian: Tell me more about the pre-heating hot pads. I have just been using a light bulb but I don't like or trust it completely. I look forward to flying in extreme cold....(the only way I can excape 4000' or better DAs where I live). What kind do you have....how many watts...can your remove them or is it glue on and forget it.??? I'll be in Yakama sometime this spring and it is my turn to buy lunch. Ralph