Appreciation post: the old guy at my counter taught me to stop cranking film advance levers
Last month a retired repairman named Gus stopped by my shop in Rochester and watched me force a stuck advance lever on a customer's Pentax K1000. He said, "You're fixing the lever, not the problem," and pointed out I was bending the ratchet pawl instead of checking the clutch. I started doing his check first now: drop two tiny drops of naphtha in the clutch, let it sit ten minutes, and work the lever slow before I touch a screwdriver. Since I made that change, four out of five of these jobs came loose with no parts swapped. Anyone else got a rule of thumb like that from someone who learned the trade before plastic gears showed up?