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Gday Bob
I dont know what the gears in the gearbox in the Titan are, but it looks like the drivetrain may have a PE that is 2x the period of the worm.
The Meade LX200s have a gearbox that resets every 3x the period of the worm ( as do many Celestrons )
If the PEC table "inside the mount" can only store data for 1 turn of the worm, there is nothing you can do about it.
Meade got around it by making a PEC model that is actually 3 turns of the worm, but that has other problems as well.
Andrew
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