Ok, I was driving my Cen ATX today on a Baseball field. When the car locks up and stops moving. So after and few minutes of inspection I realize my throttle servo horn will not move, with or without power. I loosened the throttle linkage up to see if there was a change and still no movement. What could be the problem here. And has anyone else had this problem and know how to fix it. Oh and when I do hit the trigger on my reciever I can hear the throttle servo motor trying to move the servo horn. So I am pretty sure that my servo motor is still good. I have the Skyion G82122 Hi-torque 10kg all metal gear servo's right now

Might want to check that the metal gears are all properly connected to the shaft, so that one gear shaft isn't just spinning without the gear actually turning with it. I don't know the details of metal geared servos, but this is what I'd look at. Sort of like if a motor spun its shaft, but the pinion gear was loose..