I did mine a couple of months ago and will do it again before I reasemble the scope after it's re-paint (see "stripped" in general forum), the only thing I would add here is that I used my wife's pure cotton makeup removers, little round disks of cotton and they were just fantastic, once you have rinsed your mirror under running water, some warm very lightly soapy water and drag the cotton disks over the mirror using only there own weight, oh, and one other thing, I didnt remove the mirror from the cell, it can easily be done holding it at 45 degress and not submersing it, fan stays dry. I dont own a cat, I do like cats but cant eat a whole one.