Some of my turrets in RP Warfare have little subscripts on them to indicate they only work for iron, copper, steel, etc. They look good normally but look way too big after leveling up. I think the issue is that the icons array gets reordered by Hero Turrets. Hero Turrets also hard-codes the item prototype's icon_size to 64 which can mess up other scaling steps.

Example non-upgraded icons

[item][molten-uranium-in-steel-slinger].icons = {
  {
    icon = "__rp_wall_turret_1_art__/graphics/wall_turret_1/wall_turret_1_item_icon.png",
    icon_mipmaps = 4,
    icon_size = 64,
    scale = 0.5,
    shift = {
      0,
      0
    }
  },
  {
    icon = "__rp_warfare__/heat/smelting/molten_uranium_icon.png",
    icon_mipmaps = 4,
    icon_size = 64,
    scale = 0.25,
    shift = {
      -8,
      8
    }
  }
}

After upgrading, note that the first two icons changed order and that the "hero" icon is 64x64 and scale=1, while the base icon was 64x64 scale=0.5

[item][hero-turret-1-for-molten-uranium-in-steel-slinger].icons = {
  {
    icon = "__rp_warfare__/heat/smelting/molten_uranium_icon.png",
    icon_mipmaps = 4,
    icon_size = 64,
    scale = 0.25,
    shift = {
      0,
      0
    }
  },
  {
    icon = "__rp_wall_turret_1_art__/graphics/wall_turret_1/wall_turret_1_item_icon.png",
    icon_mipmaps = 4,
    icon_size = 64,
    scale = 0.5,
    shift = {
      0,
      0
    }
  },
  {
    icon = "__heroturrets__/graphics/icons/hero-1-icon.png",
    icon_mipmaps = 4,
    icon_size = 64,
    scale = 1,
    shift = {
      0,
      0
    },
    tint = {
      a = 1,
      b = 1,
      g = 1,
      r = 1
    }
  }
}