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Removing the backlash requires messing with the gear meshing. It is not too difficult and there should be guides on the net.
But you should use the guiding assistant to measure the DEC backlash first and see how big it is. Even with larger backlash you can guide in one direction only, that is what lots of us with this class mounts (HEQ5 and NEQ6) are doing.
Basically have the DEC polar alignment slightly off so that the corrections always need to be carried one way. Then instead of Auto you only correct North or South. It is also important to keep the DEC axis slightly off-balance.
And you should keep your RA axis always East heavy so that the gears are always slightly loaded. That would avoid the backlash problems.
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