RE: Throttle servos
What I had there is ball links on both ends of a 2/56 rod. I thought that might tranfere too much vibration from the big pounding SAITO to the small fragile HiTec servo. So I took out the 2/56 rod and just slid small fuel tubing over the ball links. It is a very tight fit. Does not slip. No more vibration to the servo. I did not use any CA, but it won't hurt.
Ron