Modes 17 (15542 ETMX) and 25 (15541 ETMY) continue to give us trouble; about three hours into the lock Mode 17 will get high enough that Mode 25's PLL will jump to it, after which Mode 17 rings up quickly. Matt had set up a lower bandwidth loop in the PLL of these to help prevent this and yesterday I tightened it up even more. We've still lost lock the past two nights from these modes. To this end, I'm leaving Mode 25 in BYPASS with a 1Hz BP (still wider than I've seen it shift in frequency over many locks).