This is my second printer, this one with form 1+ laser. Over past week, major ragging (mushrooming). did the laser test seems OK. NEw tank, new resin, right temp. seems its about the mirror… Pressure air cleaned it. Dust speaks still remained, the looked on line where they spoke of microfibre disposable cloths, gently gently. seemed to reduce it bit. Still a bit of ragging and rough bits and always not finished to top. Noticed they have now removed advice on cloth and Stephen (feel sorry for him) said this could have damaged mirror, however was improvement when done, no talk of wet clean anymore anywhere. Thinking if it is the mirror, how does one keep it clean without damage…? Im doing my phd in sculpture and its really putting the pressure on me especially since l am in Australia and its costly both time and money for returns. Not up to that yet though. any thoughts out there would be greatly appreciated.