Hey, how are you guys doing? I have a question regarding High Sierra. Does this OS update automatically or do I need to download and install it manually? I got no notification for updates besides iMovie which I don't even use. And another question regarding the 2017 5k iMac. After taking it to an Apple Store to have them take a look at the extreme fan noise of my iMac the joint of screen makes a kind of rough scrubbing sound when adjusting the angle. The apple store guy wasn't very cautious with the iMac and I was on the verge of telling to slow his role and not treat it like it's sack of rice. The sound it makes when adjusting the angle sounds a bit like rough metal scrubbing on metal. Am I going crazy or was this a smooth / no sound prior to that event? Is yours making that sound when you change the angle? Thanks in advance.