–Played with SCUBA stuff. Finally (re)got the Scubapro balanced/adjustable breathing nice by installing the lightest of 4 diaphragms. Ditto with brass-bodied Tekna. Discovered the Scubapro first stage wouldn’t take a “standard” HP hose connection, so swapped parts around a bit and built a nice one.
–Replaced hearing aid battery around 8 PM.