I thought they put the corrections on the secondary. My understanding is that it is the orientation of the secondary that is important. All the stuff about getting the corrector oriented correctly is to ensure the secondary ends up in the correct orientation. Or so I assumed.
This would imply you could install a new corrector as long as you ensured the secondary ends up in the same orientation with respect to the primary.
I could be completely wrong about this, but that's what I assumed.
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