Yes it is a newer spec mount.
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It's very well balanced. When it arrived, it had the sound bare and unloaded, but to be clear the sound does not change due to angle or load, it remains constant, so does the speed. I will post a video if I can.
It had excessive backlash on both axis. There was no way it was within whatever specification it requires. It had .258 lash at the end of the mounting plate. So I adjusted the worm gears. Sound did not change, so I checked to see if there was any runout and there was not.?
