Problem with creality ld-002r, vat getting creased, prints failing.

[Oliveros]

Hello Everyone, my first post here.I have a Monoprice Ultimate II and a Creality LD-002R resin printer.I'm running into an issue with my resin printer, mainly when printing with black resin is when I seem to get the most problems.I'm trying to print an object which I've attempted twice now but for some reason the vat seems to get damaged every time. I've changed orientation and quantity on the bed but it doesen't seem to help.I'm printing with the Elegoo standard black resin, following their adviced settings with a cure time of 14 S, 10 top layers and 70 seconds cure time for the top layers.I've printed plenty of other things on that same printer with different resin and there's no problems.Any ideas?

[curious aardvark]

Hmm, sounds like the black colour is absorbing the uv light faster.
Which makes sense.
Black things heat up more in sunlight than lighter colours.

So basically, try reducing the cure time.

[Oliveros]

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.