Sometime over the last few days, we lost functionality of the F1 (Face 1) BOSEM on the main chain of ITMX, causing a bit of hunting and measuring.  The chain would not damp and although there were peaks in proper places on all TFs, the noise floor for the PITCH measurement was well below where it should be.  This pointed to F1 as having issues and hence the swap.

S/N 091 came out, 049 went in.

Note, we are seeing that many OSEM OLVs have been decaying over time.  So, while we aren't surprised that 091 was much lower than it should be, likely we need to take a closer look at all BOSEM trends.