diff --git a/mods/default/README.txt b/mods/default/README.txt
index 3c104a0..8d1357c 100644
--- a/mods/default/README.txt
+++ b/mods/default/README.txt
@@ -53,10 +53,6 @@ Calinou (CC BY-SA 3.0):
   default_papyrus.png
   default_mineral_copper.png
   default_glass_detail.png
-  default_mineral_tin.png
-  default_tin_block.png
-  default_tin_ingot.png
-  default_tin_lump.png
 
 MirceaKitsune (CC BY-SA 3.0):
   character.x
@@ -82,10 +78,6 @@ Splizard (CC BY-SA 3.0):
 
 Zeg9 (CC BY-SA 3.0):
   default_coal_block.png
-  default_steel_block.png
-  default_copper_block.png
-  default_bronze_block.png
-  default_gold_block.png
 
 paramat (CC BY-SA 3.0):
   wieldhand.png -- Copied from character.png by Jordach (CC BY-SA 3.0)
@@ -216,6 +208,16 @@ kaeza (CC-BY-SA 3.0):
   default_desert_sandstone_brick.png
   default_desert_sandstone_block.png
 
+kilbith (CC BY-SA 3.0):
+  default_steel_block.png
+  default_copper_block.png
+  default_bronze_block.png
+  default_gold_block.png
+  default_tin_block.png
+  default_mineral_tin.png
+  default_tin_ingot.png
+  default_tin_lump.png
+
 Glass breaking sounds (CC BY 3.0):
   1: http://www.freesound.org/people/cmusounddesign/sounds/71947/
   2: http://www.freesound.org/people/Tomlija/sounds/97669/
diff --git a/mods/default/license.txt b/mods/default/license.txt
index 09e4225..72af728 100644
--- a/mods/default/license.txt
+++ b/mods/default/license.txt
@@ -43,6 +43,7 @@ Copyright (C) 2010-2016:
   Mito551
   GreenXenith
   kaeza
+  kilbith
 
 You are free to:
 Share — copy and redistribute the material in any medium or format.
diff --git a/mods/default/mapgen.lua b/mods/default/mapgen.lua
index fff889f..1305226 100644
--- a/mods/default/mapgen.lua
+++ b/mods/default/mapgen.lua
@@ -364,7 +364,7 @@ function default.register_ores()
 		ore            = "default:stone_with_tin",
 		wherein        = "default:stone",
 		clust_scarcity = 10 * 10 * 10,
-		clust_num_ores = 9,
+		clust_num_ores = 5,
 		clust_size     = 3,
 		y_min          = 1025,
 		y_max          = 31000,
@@ -375,9 +375,9 @@ function default.register_ores()
 		ore            = "default:stone_with_tin",
 		wherein        = "default:stone",
 		clust_scarcity = 13 * 13 * 13,
-		clust_num_ores = 7,
+		clust_num_ores = 4,
 		clust_size     = 3,
-		y_min          = -31000,
+		y_min          = -127,
 		y_max          = -32,
 	})
 
@@ -386,7 +386,7 @@ function default.register_ores()
 		ore            = "default:stone_with_tin",
 		wherein        = "default:stone",
 		clust_scarcity = 10 * 10 * 10,
-		clust_num_ores = 9,
+		clust_num_ores = 5,
 		clust_size     = 3,
 		y_min          = -31000,
 		y_max          = -128,