Stab servo install was a little time consuming. The first task is to get the right and left stabs selected. If I got it right the static dischargers are under the right stab and on top of the left.
The space between the fuse and stab is fixed based on the slot in the stab rod. I am using MKS 777 servos and SWB arms. The servo mounting hole was perfect in location. The servo arm was shallow and the servo had to be shimmed.
I had to shim the servo with two washers under the servo mounts. I did not use the rubber grommets. Any less shims and the SWB servo arm would not clear the fuse side. Any more the arm was too far out and hit the stab root. With two washers it still slightly rubbed the bottom of the fuse side so I removed the gel coat slightly with a Dremel tool below the servo arm and will touch up paint later.
The next issue was that the servo arm screw contacted the metal bearing slot inside the stab root and prevented the stab rod slot from locking in place with the little clip at the end. I had to recess the metal servo bearing slot about 1/32" to have the screw clear the metal bearing slot and have th stab lock in.
The last issue was that the servo arm screw made contact with the fiberglass stab root and would not allow the stab full deflection at the servo end limits. I removed part of the stab root to provide clearance for the servo arm screw but the screw head would hit the top of the stab at the servo end limits. I finally made a small relief cut on the top of the stab root to clear the servo arm screw.
This may be overkill for the final ATV settings for flight. If so it is an easy fix to fill in the notch and touch up paint.
Tail servos done, wings next.
Gary