Cool little arm! Hey, there are always going to be the occasional bad part. DJ is a really stand up guy and I'm sure if you just emailed them he would treat you right.

Postage may cost more than replacement man

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So I think I agree with jstarne1 about the postage since I can get a new one at a local hobby shop for 12 bucks. With this in mind I yanked it apart and found the culprit, but not before destroying the potentiometer. The real problem was that the motor was not pressed in all the way thus no gear mesh

So now I'm left with a good candidate for a modified servo. I watched DJ's video on doing this and he uses a 220 ohm resistor, however this servos guts look different and I'm wondering if you need a different resistance.

Anyone modified a Futaba s3003?

I did a quick search on Google and a few articles agreed that for a Futaba s3003, you need to be using 2.2k resistors.

Yea theres lots of great servos out there for cheap. So cheap there's no point in buying China offbrand , just get hitec or fireball and call it a day. Jr makes super high torque standard size derbies too

So the newer S3003 servos have a half sized circuit board, more compact with an IC and micro resistors attached to where the pot was. I attempted soldering the board but to shaky of hands for this little work. I will just keep the old servo as a motor and gear box now as I'm pretty sure I've messed the board

Put a new Hitec 422 in for 10 bucks and at least I've got something to work on.