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On Owl 6/18, Bob modified gains of CH ADCs, but pedestals were not remade. This change was used for runs 4645-4659.
After Run 4659, modified to go back to "50uA" adc gains. Run 4661-4663 were done with the same (50uA) gains that had been used since late April, I think.
Then Luis cam in a tweeaked gains to allow headroom for the bcms for 50uA. This covered runs 4664-4666. He then set the pedestals using a beam ramp in run 4667.
Run 4668 and on are production with the new bcm gains and bcm pedestals.