Resin Tank LT arrived with warped and pimpled optical window

We just received some of the new resin tanks (Resin Tank LT). I was going to put one in the printer today, but I noticed that the optical window has lots of little pimples and warping. This is very hard to capture on camera, but I’ve done my best:

You can see the reflection of the light on the right has two spots where it is very warped. There are many of these pimples across the whole window, but again it is hard to see them on camera…

I have not tried printing with the tank yet in case I need to send it back. The prints I make are for prototyping antenna and waveguides, so precision is everything. I worry that these pimples are going to seriously warp any print that is over them. Has anyone else had this problem?

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