Need some help with my two nitro redcats and receiver issues. I have a nitro vortex ss which I crashed, nothing major and when I turned it over the steering no longer worked. After some investigation it appears the receiver channel is no longer working. Any way to fix this outside of a new reciever? I also have a nitro shockwave and that one is havering issues with the services being very twitchy and when you turn the steering the throttle will move, but all all times it twitching both servo's. am I looking at just replacing both receivers on them?