Hi Mike,
A very informative article,and many thanks for your efforts,
Might I suggest,before replacing the mirror, A light going over, with very low pressure compressed air,may remove any particles,that may remain from the paper towell.
I have used paper towell for final cleaning my Binoculars,and Allways end up with small particles,on the lenses.
I use a small air Compressor,with an air nozzle,to get rid of it.
Regards.John
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