Jan 2, ~14:45: Joe tried cleaning the existing kh2o, SN 1395, with methanol but the voltage never exceeded 2 mv.
Prior to cleaning, Joe noticed a smudge on the top window and the appearance of rust around the edges.
He replaced SN 1395 with SN 1390, which has an output of 2.7 V. Unfortunately 1390 did not have the mounting
plate for the electronics in the case, so Joe mounted the electronics temporarily with cable ties.