If you lack the tools or a steady hand, several shops specialize in the "DJ Models Arah 62 fixed" service:

Pricing Expectation: A professional "fixed" job (re-clipping trucks, re-greasing gears, tuning pickups) typically runs $45–$75 USD, plus shipping.

Place the locomotive upside down in a foam cradle. Remove the two screws on the fuel tank (this is a trap—do not remove the large Phillips screws on the trucks yet). Slide the body shell forward. The PCB is now exposed. Desolder the motor leads and red/black track wires if you plan a full strip-down.

The fixed geometry allows for calibrated precision that is difficult to maintain in mobile units. This is critical for applications requiring tight tolerances, such as optical sorting or precision diverting.