The left arm detectors have been switched by trading the frontplates (and attached PMTs/quartz) between the upper and lower positions. Therefore, right now the physically lower quartz is 6mm thick with PMT ZK5401, base "Gonzo". The physically upper quartz is 10mm thick with PMT ZK5369, base "Animal". The signal cables have also been swapped to as to match the previous settings, so the HV/signal cables for PMTs ZK5401 and ZK5369 remain unchanged.