Hey guys I am fairly new around here and I was wondering if I could get some help with a problem that I am having now. I have just purchased the Spektrum DX3.0 system and I am having issues with it functioning properly. The problem is this....with the truck sitting on my bench and powered up, everything works fine. When i go outside and start up the motor to run the truck its ok for a few seconds and then it goes to full throttle and out of control. It will even go to full throttle if I "ONLY" turn the wheels. My steering servo is the spektrum Z590 race servo but I left the stock throttle servo in the truck which is the AE S1903. I am wondering if it is this servo that is somehow causing this problem or is it possibly the battery pack? I am still running that standard pack that you throw 4 AA's into. Please help, I am going nutz here trying to figure this out!