hello, I'm writing from Italy. I have a problem with the screen of the iMac 27 "5k retina late 2014, purchased the 12-22-2014, I do not know if the warranty covers this type of defect within two years. There are spots in the lower left, appear as sagging, I think it's the dust, but I assure you that the environment is clean with no smoke or whatever. Obviously the spots are inside, how can I fix it, other news of these spots? I have to completely change the display or can separate the glass from the monitor LED?