Bojan, I haven't dealt personally with Chi Qin Co, but by all reports, are supposed to be pretty good at what they do. They will be able to verify my previous comments (hopefully) about the situation with removing SiO overcoat from your pyrex mirror. However, it's good news you don't have to get it recoated, but I agree, you may as well replace the secondary mirror.
Cheers
Nick
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