Lorelei and I had productive day on Lark. We replaced the leaky weatherstripping on the Perko portlight over the aft berth. I still wonder just how watertight it would be with a cockpit full of water though. We figured out the model of the head (Raritan PHII) and the part number we need to replace (I211PL piston rod yoke). We scrubbed, swept, and vacuumed. We measured the finger pier width for stairs (23 7/8). And we confirmed the hypothesis that the interior would remain cool while running the A/C with the companionway doors open since the cabin is mostly below the level of the opening.