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Keep at it Brian,
so long as you don't scratch anything or leave contamination inside when you close it up, the worst that can happen is to box it up and take a ski trip to Tokyo. Be aware of any thing that may grow fungus once closed.
I was under the impression that the second set of push-pulls adjusted the centre element, apparently not.
Are there any adjustment screws for actual centering of the elements or is that set with spacers?
Be aware that over tightening the retaining rings can induce astigmatism.
Take lots of photos...
Cheers,
Matt
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