When you replace the worms you might want to consider running the worm gear 180 degrees to CWU position, then releasing the clutch and moving your Dec axis back to CWD.?
This puts you in the "unworn" side of the worm gear when installing the new precision worm and OPW.? Might as well use the "new side" of the worm gear with the new worm. Over time if you've run motors with the clutch free, there isn't really a completely new worm gear side, but it will still have much less wear.?
Similar action can be taken for DEC.?
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