'da motos
The SG2100's use a plastic piece as the follower, and can be tightened to the cam. Take the cover off, and move the follower a little closer to the cam, which will tighten up the movement a little. Add some grease to it, will make it move easier when tight...
Pansat's moto uses metal follower, makes it a little more rugged and stronger for heavier dishes. Have not looked at 6000's yet.
All motors have gears, grease them up occasionally, do not let them get dry.
Looseness causes non-performance in exacting the return to a satellite. Wind plays havoc with them. Install dish where wind will not hit satellite as much as up high, or at certain corner of house. One day, wind comes from west, you install. Wind changes next day to come from east. One or more satellites are off-centered because of wind ingress. If your hobby, not a prob, just reset rec. mem...If you put in for client, big prob...
Moto doesn't move far enough east or west? Take cover off, move limit switches so it will move farther...