diff --git a/pull_out/2_6_CB_ELF_ELM.ipynb b/pull_out/2_6_CB_ELF_ELM.ipynb
index 007bf827802d5d36778e1228b6de438d8a159551..577f4b5d0db3be280466150e1758fdf079b59824 100644
--- a/pull_out/2_6_CB_ELF_ELM.ipynb
+++ b/pull_out/2_6_CB_ELF_ELM.ipynb
@@ -71,7 +71,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -82,13 +82,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": 2,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "74476f07c09044aeb3d4cb70179cb7b2",
+       "model_id": "6ab25dda52514d2290f4b140e4ab1c10",
        "version_major": 2,
        "version_minor": 0
       },
diff --git a/pull_out/pull_out.py b/pull_out/pull_out.py
index f818d960515bfb921b3c863febfb0aac9559e469..78e14546b3ddfdd016b141209f6a4e61739034eb 100644
--- a/pull_out/pull_out.py
+++ b/pull_out/pull_out.py
@@ -168,20 +168,20 @@ class PullOutAModel(bu.Model, bu.InjectSymbExpr):
 class PullOutAModelExplorer(bu.Model):
 
     name = 'Pullout Explorer'
-    elf_rlm = bu.Instance(PullOutAModel, ())
+    po_elf_rlm = bu.Instance(PullOutAModel, ())
     def _elf_rlm_default(self):
         return PullOutAModel(symb_class=PO_ELF_RLM_Symb)
 
-    elf_elm = bu.Instance(PullOutAModel, ())
+    po_elf_elm = bu.Instance(PullOutAModel, ())
     def _elf_elm_default(self):
         return PullOutAModel(symb_class=PO_ELF_ELM_Symb)
 
-    esf_rlm = bu.Instance(PullOutAModel, ())
+    po_esf_rlm = bu.Instance(PullOutAModel, ())
     def _esf_rlm_default(self):
         return PullOutAModel(symb_class=PO_ESF_RLM_Symb)
 
-    eff_efm = bu.Instance(PullOutAModel, ())
+    cb_ecf_ecm = bu.Instance(PullOutAModel, ())
     def _eff_rfm_default(self):
         return PullOutAModel(symb_class=CB_ELF_ELM_Symb)
 
-    tree = ['elf_rlm', 'elf_elm', 'esf_rlm', 'eff_efm']
+    tree = ['elf_rlm', 'elf_elm', 'esf_rlm', 'cb_ecf_ec']