Ok, so we speak about the black & white stripes.

I haven't checked their focus distance yet, but in theory they should have the same focus distance as the black cross, which you don't see ?!?! Do you disconnect the turntable in free scan ?

Shining 3d confirmed the scan distance should be 42-43 cm, but why have they set the focus distance of the cross at 50cm, that puzzles me. Unless you guys have it at 43 also and something is wrong with my scanner...