I am too scared to after stuffing around with the collimation, I'm afraid I'll just wreck the thing entirely. I never could figure out from the doco whether the 3 secondary screws (which sit apparently partly unscrewed) do up against anything or whether you just turn them in and out to the required place. They were very stiff when I first turned them and now turn very easily. Also, does the centre mounting screw do up against anthing or is it simply turned in or out to get the desired location?
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