Okay, here’s the black one:
This one was printed almost vertically and on its short side. The face that looks “molten” or “wet” is the one that was facing the bottom (i.e. the build platform) the tiniest bit. The one that was facing the top (i.e. the vat) turned out perfectly (that’s the matte looking bottom or inside one in the second shot). The key thing is - the difference between the two angles was minimal. Really unexpected result, i expected that to be pretty much the ideal position, as far as the surface quality is concerned.
In brighter news, the previous prints turned out to fit the assembly perfectly, with no manual calibration required. And apparently, the finish was more than satisfactory (as far as the client is concerned).