Looking for some help with a foamie rudder setup. It is setup on a pull-pull with fishing line. I am having problems with the servo not holding and jumping. The jumping happens at both throw points and is intermittant. Just wondering if it is a bad servo (very possible given that it is a HobbyKing $2 servo.)

Here is the video of what is going on. Could it be something with the Rx to Servo or someone also mentioned it could have something to do with the fail/safe???

Any ideas???

[youtube]http://www.youtube.com/watch?v=3YPHJgWBgwA[/youtube]