diff --git a/elements/neuron/presynapse.md b/elements/neuron/presynapse.md
index 002ec2e..5929a73 100644
--- a/elements/neuron/presynapse.md
+++ b/elements/neuron/presynapse.md
@@ -402,7 +402,7 @@ PossibleUpPreVgccTun
 
 ##### *TryTunDownPreVcgg
 
-###### PossibleDownPreVgccTun: ( active: 10x ) accumulator
+###### PossibleDownPreVgccTun
 
 ```Gen
 PossibleDownPreVgccTun
@@ -426,14 +426,8 @@ DEV_TUBS_PRE
 
   snippet:
 
-    # *TunePossible
-    @: CONTEXTOR [ snippet: CheckVgccPreTun, rf: active 60x ]
-
-    # *TryTunUpPreVcgg
-    @: ACCUMULATOR [ snippet: PossibleUpPreVgccTun, rf:active 10x ]
-
-    # *TryTunDownPreVcgg
-    @: ACCUMULATOR [ snippet: PossibleDownPreVgccTun, rf:active 10x ]
+    # *??
+    @: CONTEXTOR [ snippet: ??, rf: active 60x ]
 ```
 
 #### CA2-PRESYNAPSE-DEV: Developer