The attached pic+drawing shows the modified TMSX layout.

It is also posted as https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11437 linked from the in-air detection top page.

By the way, we noticed that the bottom part of the TMSX IR beam is very slightly clipped :( We tried to identify where, and the clipping seemed to happen in the in-vac part.