Added 350 mL water to TCSY to bring level from 8.6 cm up to 10.1 cm today. This appears to be a higher-than normal drop over the last couple of days, with the caveat that the previous reading was without optimal eyeglasses. At a minimum, it seems wise to keep an eye on the readings. Also, topped off Wallace with 50 mL.
Did a visual inspection of the CO2Y table for leaks, I checked on the table and around the back near the periscope. I couldn't see any obvious leaks or water anywhere.