Johnny,
My bet is that the RX is putting out a pulse width that is driving the servo up against it mechanical limits. Have you tried changing the programming such that the servo is in the middle of the travel and then turn on the system? Also, to check the pulse width, you can use an FMA servo lab:
http://www.fmadirect.com/detail.htm?...901§ion=52
This thing is the greatest thing since sliced bread and I use mine all the time. You can find the limits of the servo travel when its installed and then connect it to the RX and set the ATV (end points for you JR guys) to those values and never overdrive the servo. Its also great for setting up gyros, exercising servos, etc.
Also, you need a Hanger 9 amp meter to see how much the servo is drawing...
http://www.horizonhobby.com/Products...?ProdID=HAN172
Two things you should not be without....
Bob