RE: Four-Star rudder servo
Don, I just got another 4*120 this week ,(kit) so I can have it
ready for the fall/winter as a knock around. One thing that
the 4*'s really respond to quite well is a little ballast on the CG.
The additional weight brings the wing loading up to where it
should be and it will carry a better in the wind.
Good luck with it.
Regards,
Roby