"gilles.thesee" wrote:

I just realized I used wrong terms : it's not the clevis itself I want to
turn, but actually the attaching piece at the end of the control screw ON
THE SERVO.

That's the way I understood it, the error in the response
was mine. I'll open one up tomorrow night if I get a
chance. Have you talked to anyone at Ray Allen (or MAC or
whoever makes 'em now)? You might also as Van's, I know they
use 'em and might now something about the inner workings.

Dave 'innards' Hyde