First, get thee to:
http://www.horizonhobby.com/Products...odId=JRP8612**
and get the manual if you don't have it . . . .
Then, take the time to actually *read* the manual. Love the manual. *BE* the manual!!!!
Most likely, you are missing something simple, such as the detail that throttle on a JR rig is channel 1, not 3 like Futaba and HiTec.
If the manual doesn't get you where you need to go, come back and ask a specific question. What you posted above gives us no information to go on whatsoever, other than to refer you to the correct manual for your radio . . . .
- Tim