{
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  "drum": {
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  "socket_clearance_checks": {
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    "socket_vs_insert_intersection": "empty",
    "socket_vs_band_opening_intersection": "empty",
    "front_vertical_margin_mm": 0.6,
    "rear_radial_margin_mm": 1.5,
    "rear_engagement_depth_mm": 23
  }
}