I now use this on my server to replace Oxide equivalents.

For anyone new to Harmony, like me, the cfg file will go into  a new folder called HarmonyConfig. Then in web console - 'harmony.load BetterAirDrop' I found these settings worked best for me; 

{
  "PlaneSpeedMultiplier": 100,
  "PlaneAdditionalHeight": 0,
  "CrateAirResistance": 0.5,
  "ExactAirDrop": true,
  "RemoveSupplySignalSmoke": false
}