Gimbal Cam improved

So the original cam design allowed for some slack (e.g. if you roll a ball in a bowl with a flat bottom, it can stop anywhere on that bottom, compared to a bowl with a round bottom where the ball can only stop in one point.) So I modified and tested the new cams. I also changed the cam bearing size so it is 685zz(same as the other small ones).

I did this because when I was wiring it all up I noticed I didn't have a good center, so I took it apart and noticed the slack.