Are you sure the servo can be positioned as closely as you want in the first place?
I am not sure on that either.
I guess, it depends on the gear and the teeth assembly?
Yes I see that's a nylon geared one... and I also read that sometimes there's an intrinsic lack of positioning ability in the potentiometer mechanism in a servo. I'd be really surprised if you can get even repeatably to anything like a degree. But that's me just guessing...
So what I'm going to do is rig up some kind of pointer / protractor thing this weekend and see what kind of luck I have. I've got a couple of standard size HK15138s and micro size HXT900s.
What sort of loading will your servo be subject to?
Edit... hey ZK, that's exactly the kind of rig I have in mind... I was thinking 1/2 degree tops, most likely even 1 degree. We'll see.....