Finally back to Observing. No idea what changed, but I did yet another initial alignment, then we were finally able to get DRMI. Before that, the closest thing to a DRMI lock I could get was some hash on the PRMI striptool that looked a lot like the PRMI to DRMI transition. I did switch ETMX ISI to all 45 blends (99% sure that's irrelevant) and touched TMSX in pitch a tiny amount (probably also irrelevant, but not sure). Dark MICH is also still broken, but I've been getting PRMI locks all night and there are other ways to get rough BS alignments.