diff --git a/README.md b/README.md
index ffb052c..a6dc336 100644
--- a/README.md
+++ b/README.md
@@ -73,8 +73,6 @@ Second, edit `inventory/my-cluster/hosts.yaml` to match the system information g
 
 ```yaml
 rke2_cluster:
-  vars:
-    install_rke2_version: v1.27.10+rke2r1
   children:
     rke2_servers:
       hosts:
@@ -85,6 +83,9 @@ rke2_cluster:
         agent2.example.com:
           node_labels:
           - agent2Label=true"
+all:
+  vars:
+    install_rke2_version: v1.27.10+rke2r1
 ```
 
 If needed, you can also edit `inventory/my-cluster/group_vars/rke2_agents.yml` and `inventory/my-cluster/group_vars/rke2_servers.yml` to match your environment.
diff --git a/site.yml b/site.yml
index 01481e4..e29a3ed 100644
--- a/site.yml
+++ b/site.yml
@@ -6,7 +6,7 @@
   become: true
   roles:
     - role: rke2_server
-  serial: "4"
+  serial: 1
 
 - name: Agent play
   hosts: rke2_agents
@@ -14,7 +14,7 @@
   become: true
   roles:
     - role: rke2_agent
-  serial: "10"
+  serial: 3
 
 - name: Cluster manifest play
   hosts: rke2_servers