I know this isn't 1/2a specific....but this is the only forum I post to and I know that there is a wealth of knowledge with everyone here. I crashed a plane last year and I just now got around to fixing it(it really wasn't my fault, rog was standing next to me, so we will blame him). I went to check the servos(Futaba S3004) and the elevator servo when operated continues to just run....for instance; I pull back for up elevator and the servo never stops, I push forward for down elevator and the servos never stops, it continues to run(no control horn hooked up). I pulled it apart and from what I can tell the gears look fine, nothing apears to be stripped. The servo also sounds fine no grinding or anything. I will try and post a few pics of the insides. Any ideas?

thanks
-Bill