Long story short, I'm looking to upgrade my electronics. I have a Futaba 3PM-X and an R603FF receiver. I want to upgrade to a 7.4V lipo receiver pack and some high voltage servos, but really don't want to upgrade my TX/RX.

Has anyone ran a R603FF at 7.4V without issues? I know I can purchase a voltage regulator, but that just seems counter intuitive. Any suggests/help is appreciated!