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Use Google Earth to see your building. Use the ruler tool to find the angle between the west face of the building and the true N-S line.
You should then be able to align the polar axis by placing the mount parallel to the wall and then shifting by the angle previously measured.
Get a cheap digital level to set the declination axis to suit your latitude.
Google Earth lat & lon are good enough to use as your position.
This should get you fairly close to proper alignment and is easy to do.
I agree with Ray, forget star alignment if looking at planets. Just manually guide to keep the planet in view.
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