I have ruined 2 nice servos so far 94357,94360. I have the 94359 on there now with a smarter linkage setup and it seems to be fine.
The two fixes I used on mine was not aligning the servo arm parallel but putting some angle away from carb. I still have plenty of throw to open carb.
I also made the rubber tubing on the brake linkages 2 mm longer than the manual says so that the arm does not have to travel so far to engage brake and sent the opposing side(throttle) so far back into carb.
EPA on brake and throttle seem to in great shape with no noticible flex in radio tray or on motor or brakeparts.
chris