Hey,
I have an HPI Savage that I have put a JR XR3 radio and receiver into. With the radio and receiver I also installed an Airtronics 94359z for steering. Eventually I bought a Hitec 5625 Digital for throttle servo duty. I plugged the 5625 in and turned on the radio and receiver. The servo wont respond to commands. It wont return to center. After hitting the gas I noticed that as soon as I let go of the throttle it would immediatley go to full brake. I tried every setting in the radio and nothing seemed to solve the problem. Can someone please help me?