Lipohead

Anybody having a problem with intermittent receiving with dx3s car radio ? Seems to work fine one sec then nothing , especially on throttle , I've rebinded numerous times , esc is tekin rs , with spektrum 3000 receiver , this is on 2 of my cars with same setup , so its not in the cars themselves , fresh batteries , and other stuff doesn't help , any answers before new radio purchase , I like the radio don't want quit yet