diff --git a/subduction/interface/gmm-tree.json b/subduction/interface/gmm-tree.json
index 900748caa9e229df69a11441136d1f9351a8db46..e60b0a4ba3888ebf835108aa1f893c7ccfb75460 100644
--- a/subduction/interface/gmm-tree.json
+++ b/subduction/interface/gmm-tree.json
@@ -1,7 +1,7 @@
 [
-  { "id": "AM_09_INTERFACE_BASIN", "weight": 0.125 },
-  { "id": "ZHAO_06_INTERFACE_BASIN", "weight": 0.125 },
-  { "id": "AG_20_CASCADIA_ADJ_INTERFACE", "weight": 0.25 },
+  { "id": "AM_09_INTERFACE_BASIN", "weight": 0.08 },
+  { "id": "ZHAO_06_INTERFACE_BASIN", "weight": 0.17 },
+  { "id": "AG_20_CASCADIA_ADJ_INTERFACE_BASIN", "weight": 0.25 },
   { "id": "KBCG_20_CASCADIA_INTERFACE_BASIN", "weight": 0.125 },
   { "id": "KBCG_20_SEATTLE_M9_INTERFACE_BASIN", "weight": 0.125 },
   { "id": "PSBAH_20_CASCADIA_INTERFACE_BASIN", "weight": 0.125 },