Hey Josh, how would you do it, make an adapter (As thin as possible) to add an M42 thread to the camera side of the OAG, or mark up then drill and tap the filter wheel cover? Either way needs four small, fine threaded holes to be drilled and you would need the filter wheel cover in both cases so that for an adapter, you could spin up the M42 thread then trial fit to the FW and determine the right places for holes to fit the OAG in the right orientation.
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