Hi guys, I got my new iMac 2019 (i9 - 1TB SSD - Radeon) a week ago and noticed recently that the black coating on the bottom is coming off. I think it was there before I opened the box so my concern is that this could go bigger over the time, perhaps with usual cleaning. I'm still under 14-day free return warranty. What do you think guys? Should I return it? It's a big issue (if not now maybe later?). If I don't return it now, is this covered under warranty ? Thanks for your input.