This afternoon, Ryan C and I hopped into BSC2 (via BSC1) and took a few more measurements of the optic position relative to the cage for Jason and the IAS mapping.  Jason will periodically post some data which consolidates these more nicely visually.  In the end, we found the BS optic rotated clockwise in it's cage a small amount (likely how we installed it), namely 1mm out of plane from one side to the other.