This is really minor, but it seems to me that the mapping on the stairs in vulcan is off. If you look while descending them you get these wierd horizontal (along the stair) bands, that look like treads on some stairs but then don't match up on the others. It looks as if the mapping is off. I think the mapping could be reworked to remove the bands completely since the bands that run down the stairs (from one to the next) are perfect.
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