I've noticed Heli will spawn close to each other. It just spawned twice within 30 min. Below is my config. Is something wrong with the config that is causing it to spawn so often?

{
  "Block Airdrops spawned by the server": false,
  "Block Cargo Ships spawned by the server": true,
  "Block Chinooks spawned by the server": true,
  "Block Patrol Helicopters spawned by the server": true,
  "Event Timers in seconds": {
    "Airdrop": {
      "Max": 0,
      "Min": 0
    },
    "Cargo": {
      "Max": 19800.0,
      "Min": 12600.0
    },
    "Chinook": {
      "Max": 19800.0,
      "Min": 12600.0
    },
    "Helicopter": {
      "Max": 19800.0,
      "Min": 12600.0
    }
  }
}

Is it the Patrol Helicopter, Chinook or both?

mvrb

Is it the Patrol Helicopter, Chinook or both?

It was mainly patrol, someone had me put server.events false in server.cfg and that seems to have done the trick :)

Yeah that will fix it, I just have to find a way to fix the plugin in case someone wants to disable the Patrol Helicopter and keep the Chinook enabled or vice versa, but it's good that you found a solution