Hey, I usually start by getting the gears out of their housing and dusting them down with a soft brush. Then I run a quick visual scan – if there’s any worn tooth or a missing chip, I replace it with a piece that matches the original profile, sometimes from a spare kit or a carefully cut piece from a similar toy. Once the parts are clean, I oil them with a light silicone spray, making sure the oil’s thin enough not to clog the tiny clearances. I test the assembly in a low‑speed turn‑table to feel for smoothness; if it still feels rough, I’ll grind a few of the tooth edges slightly to relieve any interference. Finally, I reinstall everything, re‑align the wind‑up barrel, and give it a gentle wind‑up test – if it runs steady, I’ve breathed life back into those little gears.