Just built a new off roader , transfered all radio gear from my old car to the new , and now the steering servo wont work . Ive tried it on another channel on the reciever and noticed that it still doesnt work on that . The other working servo works fine on either channel 1 or 2 off the reciever . So what I did was take the faulty servo appart took off the gears inside then replugged it in and the one cog spins constantly !! have i got a faulty servo ? Will any servo type fit any reciever ?