Servo repair?
 

I have a JR "Racing Servo" (don't remember the number) in my Associated TC3 and it's being used as a steering servo.
The problem is....When I turn it to the right and release the wheel slowly, the servo makes a buzzing sound and doesn't return to center. If I touch the servo arm it centers and stops buzzing. I have removed all the linkage so it's absolutely a problem with the servo.
Is there something I can do to repair the servo or am I stuck shelling out more money for another servo?
Any help will be appreciated...

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i did my servo repairs DIY... the only thing u can order is the servo gears & casing.. even if u using metal gear make sure the gears are properly lubricated. u can use the kyosho ring grease white...;)