well-tuned russian

• вы́веренный

  verified, checked, adjusted, calibrated, precise, accurate, well-tuned

• нала́женный

  well-adjusted, well-tuned, established, debugged, set up

• отка́танный

  run-in, broken-in

  well-practiced, rehearsed, perfected, fine-tuned

• отла́женный

  well-adjusted, well-tuned, debugged, fine-tuned, streamlined, well-oiled