THE LEAD SCREW IS VERY HARD TO TURN. BACKLASH BUSHING SEEMS BE TOO TIGHT AND BINDING ON SCREW. DO IT NEED LUBRICATION OR DID DAMAGE NUT WHEN INSERTING SCREW?
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Yes, you can use lubrication, like 3-in-1 oil to make it a bit easier. You will need to run it up and down to break it in. Additional Information:
