The Yarm green locking was complaining about the fiber polarization being too high, even though the rejected percent was 16 with the threshold being 30 (so, 16 being less than 30, it should have been fine).  After some more clicking (opening the fiber pol PD sub-screen from the Yarm PLL screen), I found an error message "power too high".  It looks like we have 0.086 mW but the threshold of too high power was set to be 0.080 mW.  So, I upped the threshold to be 0.09 mW for now so that we can keep working on diagnosing the COMM lack-of-locking situation.