There's an error in your example data JSON with the gathercontrol.vip group where it won't validate because of a couple of lines referring to mushroom and cloth as part of CustomRateMultQuarry. I think they should be in the CustomRateMultCropGather section below. I thought you might like to know. 😉

Ah. I just noticed that those two values should actually be under CustomRateMultPickup, which is missing altogether from the vip group. That makes more sense doesn't it? So it should be like this:-

      "CustomRateMultQuarry": {
        "stones": "5/6",
        "sulfur.ore": "5/6"
      },
      "CustomRateMultPickup": {
        "mushroom": "5/6",
        "cloth": "5/6"
      },
      "CustomRateMultResource": {
        "stones": "5/6",
        "sulfur.ore": "5/6"
      },​

Thank you. I'll take a look at it.