diff --git a/subduction/slab/interface/gmm-tree.json b/subduction/slab/interface/gmm-tree.json
index 92a5d76458e5d818f67d6c73dc7a9516b8a5afb7..40f19b731200ff6bc55025d48830fefe029d22e3 100644
--- a/subduction/slab/interface/gmm-tree.json
+++ b/subduction/slab/interface/gmm-tree.json
@@ -1,8 +1,8 @@
 [
-  { "id": "AG_20_GLOBAL_INTERFACE", "weight": 0.10 },
-  { "id": "AG_20_ALASKA_INTERFACE", "weight": 0.15 },
-  { "id": "AG_20_ALASKA_INTERFACE_ADJUSTED", "weight": 0.15 },
-  { "id": "KBCG_20_GLOBAL_INTERFACE", "weight": 0.20 },
-  { "id": "PSBAH_20_GLOBAL_INTERFACE", "weight": 0.20 },
-  { "id": "PSBAH_20_ALASKA_INTERFACE", "weight": 0.20 }
+  { "id": "AG_20_GLOBAL_INTERFACE", "weight": 0.16667 },
+  { "id": "AG_20_GLOBAL_INTERFACE_AK_BIAS_CORR", "weight": 0.16666 },
+  { "id": "KBCG_20_GLOBAL_INTERFACE", "weight": 0.16667 },
+  { "id": "KBCG_20_GLOBAL_INTERFACE_AK_BIAS_CORR", "weight": 0.16667 },
+  { "id": "PSBAH_20_ALASKA_INTERFACE", "weight": 0.16667 },
+  { "id": "PSBAH_20_ALASKA_INTERFACE_AK_BIAS_CORR", "weight": 0.16666 }
 ]