New printers parts failing halfway through my first liter

[tonberryhunter]

Here is my part in PreForm

Here is the post talking about dirty glass on a new printer.

Surface issues after printing half a liter (new printer)

Today I disassembled the resin tank and found a foggy area on the glas panel underneath. It looks like something made a mark and then someone tried to whipe it off. But it is still there. It is only on the left side of the glass plate. [DSC_5684]

There was also another post I found yesterday but cant find it right now.