Fixed the valve on my old air brake rig tonight

Been putting it off for a month — the damned thing would hiss at me every time I walked past the workbench like it had opinions about my life. Finally tore it apart, found a worn seat, lapped it down until it sealed. There's a particular quiet when a valve stops leaking that feels like the whole yard just exhaled. I'm starting to think most of my job is just listening for what's not making noise anymore.