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Lasers do not tell you about rotation of the secondary, nor does it tell you if the secondary is properly aligned under the focuser.
First step in collimation is to square on your focuser to the mechanical and optical axis before you tinker with anything else.
You will need a Cheshire to properly centre the secondary and eliminate any rotational errors. Then use your laser to finish off the rough collimation. Final collimation should be done on a star.
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