RE: Servo Play
Do everything John is saying, there are only two places for slop in that servo, either the shaft or the gears themselves. When you buy new servos at least buy BB [ball bearing] servos, for a couple dollars more they are smoother and don't wear out as quickly. Those servos you have are designed for smaller 40 size planes, very good for trainers and smaller sport type of planes. As you move up in planes you should be moving up in servos too.