Good point, I kind of assumed the same thing, so I tried reducing it by 1 second at a time.It's recommended between 13-15 S so I started at 15 and it destroyed the vat, then turned it to 14 and it creased the new vat, then 13 and it seemed to do ok, but even then, it seems like too much, the supports are super brittle which makes me think it's curing them too much.I'm also having issues with the LCD screen, I've replaced it twice already, once because I was an idiot and didn't check the vat and so cracked the screen, then we printed for a while until we started seeing black dots, then we replaced it again and after 3 or so prints, I'm seeing small black dots again.I releveled the bed after changing the screen, so I'm not sure what's causing it. So far, emailing Creality has done me no good, they just don't answer.