As far as I know the only people who had problems with overheating where using the Rx in extreme conditions (Middle East) as far as the low voltage issue I have an FS version in an Elan with all digital servos and it works without problems, none of my airframes use Y leads they can be the source of problems, I also do not use 4 cell AA size 4.8volt batteries to supply my Rx and servo's.

Mike