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What really helps is if your centre donut size is well matched to the size of the illuminated ring from the cheshire.
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I believe that is the strength of Catseye system, the center spot is precise and exactly matched to the Cheshire ring, also the spot is triangular and each point of the triangle is matched to one of the Primary tilt screws so it's supposed to be easy to figure out which screw to adjust to get the points of the triangle touching the inner ring (it's supposed to be collimated when each point just touches the cheshire ring).