Just came back from A19, A18, and C (in that order), where I wiped a few drops off of transducers. This seems to have lowered the level of diagbits being set. After cleaning, I blocked the path with my hand for 10s (both to put a flag in the data and to cause the CSAT's software to lose any memory it might have of the wrong sonic signal. (I don't think it does this in V3, but didn't think it would hurt.)