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Tony
A couple of important things, did you do a complete rotation by hand as mentioned in Paul's post, it is critical that you do that so you know you have the worm adjusted correctly, you will feel the highs and lows when you do that. Were the Oldham Coupler grub screws loose?.
When you run the system, make sure you keep an eye on your motors, the Gemini servo's will heat up quickly if the worm is too tight, if they are getting warm to touch there are 2 possibilities, 1. the worm is too tight, you will get a Motor Stalled or Tracking Stopped messages on the Gemini HC, turn the unit off immediately or you will fry the motors. 2. Slow your slew speed down, I think the default is 1200, drop it down to 800 and see what happens. This is where the balance between gearmesh and backlash comes into play, you have to balance each out, it takes a little time and practice but it is worth it in the end.
JohnG
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