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Nigel when you adjust the laser up by the 3 secondry mirror screws in the centre of the ring on the primary mirror .....take the laser out then put the cheshire in and then by adjusting the 3 screws at the back of the scope align the primary by putting the crosshairs in the centre ......but this is where a lot of people fall down,what you gotta do is repeat the process over and over until you cant make any more adjustments,sometimes it could take 5 times back and forth between the primary and secondry mirrors to achieve colimation...But thats just me others do it different.
Have a good grip on that screwdriver when adjusting that secondry ,you dont want to drop it in there or i`ll here you from here....cheers Kev.
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