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  1. #2
    Well - after my mate came around and had a look he noticed the z axis jib strip was moving up and down. We had a look and found a lot of play where the screw head contacts the jib strip and as the Z went up and down it would jam and cause the notchy feeling when the Z screw was moved.

    We put a bit of solder on it and filed it back (just temporary) and put it back in and adjusted it and now the head moved up and down very easily.

    Looks like I don't need to remove the Z ball screw at all now - Phew :)

    Cheers

    Dave

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