diff --git a/kubejs/data/tfc/worldgen/configured_feature/vein/normal_cassiterite.json b/kubejs/data/tfc/worldgen/configured_feature/vein/normal_cassiterite.json
index 7b291214d..80b3321ae 100644
--- a/kubejs/data/tfc/worldgen/configured_feature/vein/normal_cassiterite.json
+++ b/kubejs/data/tfc/worldgen/configured_feature/vein/normal_cassiterite.json
@@ -9,7 +9,7 @@
     "max_y": {
       "absolute": 75
     },
-    "size": 20,
+    "size": 40,
     "density": 0.6,
     "blocks": [
       {
@@ -17,21 +17,17 @@
           "tfc:rock/raw/granite"
         ],
         "with": [
+          {
+            "weight": 40,
+            "block": "gtceu:tfc_granite_cassiterite_ore"
+          },
+          {
+            "weight": 40,
+            "block": "gtceu:tfc_granite_tin_ore"
+          },
           {
             "weight": 20,
-            "block": "tfc:ore/poor_cassiterite/granite"
-          },
-          {
-            "weight": 50,
-            "block": "tfc:ore/normal_cassiterite/granite"
-          },
-          {
-            "weight": 30,
-            "block": "tfc:ore/rich_cassiterite/granite"
-          },
-          {
-            "weight": 11,
-            "block": "tfc:ore/topaz/granite"
+            "block": "gtceu:tfc_granite_topaz_ore"
           }
         ]
       },
@@ -41,16 +37,12 @@
         ],
         "with": [
           {
-            "weight": 20,
-            "block": "tfc:ore/poor_cassiterite/diorite"
+            "weight": 40,
+            "block": "gtceu:tfc_diorite_cassiterite_ore"
           },
           {
-            "weight": 50,
-            "block": "tfc:ore/normal_cassiterite/diorite"
-          },
-          {
-            "weight": 30,
-            "block": "tfc:ore/rich_cassiterite/diorite"
+            "weight": 60,
+            "block": "gtceu:tfc_diorite_tin_ore"
           }
         ]
       },
@@ -60,16 +52,12 @@
         ],
         "with": [
           {
-            "weight": 20,
-            "block": "tfc:ore/poor_cassiterite/gabbro"
+            "weight": 40,
+            "block": "gtceu:tfc_gabbro_cassiterite_ore"
           },
           {
-            "weight": 50,
-            "block": "tfc:ore/normal_cassiterite/gabbro"
-          },
-          {
-            "weight": 30,
-            "block": "tfc:ore/rich_cassiterite/gabbro"
+            "weight": 60,
+            "block": "gtceu:tfc_gabbro_tin_ore"
           }
         ]
       }
diff --git a/kubejs/data/tfc/worldgen/configured_feature/vein/normal_garnierite.json b/kubejs/data/tfc/worldgen/configured_feature/vein/normal_garnierite.json
index 48dceeade..6f0240230 100644
--- a/kubejs/data/tfc/worldgen/configured_feature/vein/normal_garnierite.json
+++ b/kubejs/data/tfc/worldgen/configured_feature/vein/normal_garnierite.json
@@ -9,7 +9,7 @@
     "max_y": {
       "absolute": 60
     },
-    "size": 15,
+    "size": 35,
     "density": 0.6,
     "blocks": [
       {
@@ -18,16 +18,20 @@
         ],
         "with": [
           {
-            "weight": 20,
-            "block": "tfc:ore/poor_garnierite/gabbro"
+            "weight": 40,
+            "block": "gtceu:tfc_gabbro_garnierite_ore"
           },
           {
-            "weight": 50,
-            "block": "tfc:ore/normal_garnierite/gabbro"
+            "weight": 10,
+            "block": "gtceu:tfc_gabbro_nickel_ore"
+          },
+          {
+            "weight": 20,
+            "block": "gtceu:tfc_gabbro_cobaltite_ore"
           },
           {
             "weight": 30,
-            "block": "tfc:ore/rich_garnierite/gabbro"
+            "block": "gtceu:tfc_gabbro_pentlandite_ore"
           }
         ]
       }