diff --git a/Haas_Gantry_BIDC/Bechtel SR.cps b/Haas_Gantry_BIDC/Bechtel SR.cps
index b551168..8b288d6 100644
--- a/Haas_Gantry_BIDC/Bechtel SR.cps	
+++ b/Haas_Gantry_BIDC/Bechtel SR.cps	
@@ -855,9 +855,15 @@ function onOpen() {
     if (tools.getNumberOfTools() > 0) {
       for (var i = 0; i < tools.getNumberOfTools(); ++i) {
         var tool = tools.getTool(i);
-        if (tool.number == 1 || tool.number == 2) {
-          // throw "Tool numbers 1 and 2 are not available for use."
+        // Added 8/31/21 | Kevin Pan | pan261
+        if (tool.number == 1) {
+          throw "Tool number 1 is reserved for probing."
         }
+        if (tool.number == 2) {
+          throw "Tool number 2 is not available for use."
+        }
+        // pan261
+
         if (getHaasToolTypeBIDC(tool.type) == HAAS_PROBE) {
           continue;
         }