I've just replaced the gear set on my Spektrum S6000 servo and it's really unbalanced.

It's centred fine but it moves left way more than it moves right.

I have to set the epa on my radio to 60% left and 135% right to get equal movement.

The gears were replaced in the correct order. All epa, trim, sub trim and d/r settings were set to default before hooking up the servo for the first time.

What have I done wrong?

Do you have to or did you center the servo pot. with the out drive? I have never worked on a spectrum servo, but some older ones I had to center the radio pull the gears center the out drive ( till the servo motor stops running & then reassemble with the out drive stops centered. I cannot tell in the picture of the gears if the out drive can be installed off center.

hope this helps
Tom

The outdrive (final gear) sits on a rectangular key so I don't think it can be installed off center.

In order to stop the servo motor spinning I have to turn the outdrive clockwise 15 degrees off center.