diff --git a/Jenkinsfile b/Jenkinsfile
index 1eae5559..16b94a85 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -19,8 +19,16 @@ spec:
                 operator: NotIn
                 values:
                   - titan-04
+                  - titan-05
                   - titan-06
                   - titan-11
+                  - titan-12
+                  - titan-13
+                  - titan-14
+                  - titan-15
+                  - titan-17
+                  - titan-18
+                  - titan-19
       preferredDuringSchedulingIgnoredDuringExecution:
         - weight: 100
           preference:
diff --git a/ci/Jenkinsfile.titan-iac b/ci/Jenkinsfile.titan-iac
index ed6db7ce..eb44f712 100644
--- a/ci/Jenkinsfile.titan-iac
+++ b/ci/Jenkinsfile.titan-iac
@@ -18,8 +18,16 @@ spec:
                 operator: NotIn
                 values:
                   - titan-04
+                  - titan-05
                   - titan-06
                   - titan-11
+                  - titan-12
+                  - titan-13
+                  - titan-14
+                  - titan-15
+                  - titan-17
+                  - titan-18
+                  - titan-19
       preferredDuringSchedulingIgnoredDuringExecution:
         - weight: 100
           preference:
diff --git a/services/jenkins/configmap-jcasc.yaml b/services/jenkins/configmap-jcasc.yaml
index a1c738a7..88c785a0 100644
--- a/services/jenkins/configmap-jcasc.yaml
+++ b/services/jenkins/configmap-jcasc.yaml
@@ -806,8 +806,8 @@ data:
                 value: "*"
       clouds:
       - kubernetes:
-          # Leave Pi CPU and storage I/O for services and recovery. Builds queue.
-          containerCapStr: "2"
+          # Stabilization: one build at a time leaves headroom for live services.
+          containerCapStr: "1"
           connectTimeout: "20"
           readTimeout: "90"
           jenkinsUrl: "http://jenkins.jenkins.svc.cluster.local:8080"
@@ -872,7 +872,17 @@ data:
                               - key: kubernetes.io/hostname
                                 operator: NotIn
                                 values:
+                                  - titan-04
+                                  - titan-05
                                   - titan-06
+                                  - titan-11
+                                  - titan-12
+                                  - titan-13
+                                  - titan-14
+                                  - titan-15
+                                  - titan-17
+                                  - titan-18
+                                  - titan-19
                       preferredDuringSchedulingIgnoredDuringExecution:
                         - weight: 100
                           preference:
diff --git a/services/logging/Jenkinsfile.data-prepper b/services/logging/Jenkinsfile.data-prepper
index c8b57687..caa90747 100644
--- a/services/logging/Jenkinsfile.data-prepper
+++ b/services/logging/Jenkinsfile.data-prepper
@@ -20,6 +20,20 @@ spec:
                 values:
                   - rpi5
                   - rpi4
+              - key: kubernetes.io/hostname
+                operator: NotIn
+                values:
+                  - titan-04
+                  - titan-05
+                  - titan-06
+                  - titan-11
+                  - titan-12
+                  - titan-13
+                  - titan-14
+                  - titan-15
+                  - titan-17
+                  - titan-18
+                  - titan-19
       preferredDuringSchedulingIgnoredDuringExecution:
         - weight: 80
           preference: