lol been there, that bolt action on those titanium pens loves to gum up. take the tip off and hit the mech with a dab of dry lube or even a pencil lead, graphite, it smooths it right out. if that fails just grab a cheap pilot g2, mine's lasted years and never jammed once.

Learned more about batteries from a guy at the auto parts store than I ever did from YouTube. He popped open an old car battery and showed me the plates inside, explained why cold cranking amps matter more in winter, all that stuff. Spent like 20 minutes just talking to me in the parking lot. Same deal with the guy who fixed my lawnmower, dude knew carburetors inside and out and showed me how to clean one right there on his workbench. Some people just know their trade cold and love passing it on. Those ten minute chats beat any class I ever sat through.