diff --git a/roles/test_operator/tasks/stages.yml b/roles/test_operator/tasks/stages.yml
index 675018677a..1c35a14d50 100644
--- a/roles/test_operator/tasks/stages.yml
+++ b/roles/test_operator/tasks/stages.yml
@@ -37,8 +37,10 @@
 - name: Override specific type config
   vars:
     _stage_config: 'cifmw_test_operator_{{ _stage_vars.type }}_config'
+    _stage_config_value: "{{ _stage_test_vars[_stage_config] | default(lookup('vars', _stage_config, default=None)) }}"
+  when: _stage_config_value is not none
   ansible.builtin.set_fact:
-    stage_vars_dict: "{{ stage_vars_dict | combine({_stage_config: _stage_test_vars[_stage_config] | default(lookup('vars', _stage_config, default=omit)) }) }}"
+    stage_vars_dict: "{{ stage_vars_dict | combine({_stage_config: _stage_config_value}) }}"
 
 - name: "Call runner {{ _stage_vars.type }}"
   ansible.builtin.include_tasks: "runners/{{ _stage_vars.type }}_runner.yml"
diff --git a/zuul.d/whitebox_neutron_tempest_jobs.yaml b/zuul.d/whitebox_neutron_tempest_jobs.yaml
index 4e5b442e0c..84465d83ec 100644
--- a/zuul.d/whitebox_neutron_tempest_jobs.yaml
+++ b/zuul.d/whitebox_neutron_tempest_jobs.yaml
@@ -15,19 +15,28 @@
       deployment by running whitebox-neutron-tempest-plugin tests.
     vars:
       cifmw_run_test_role: test_operator
-      cifmw_os_must_gather_timeout: 28800
+      cifmw_os_must_gather_timeout: "30m"
       cifmw_test_operator_timeout: 14400
       cifmw_block_device_size: 40G
       cifmw_test_operator_tempest_concurrency: 6
       cifmw_test_operator_tempest_network_attachments:
         - ctlplane
       cifmw_test_operator_tempest_container: openstack-tempest-all
-      cifmw_test_operator_tempest_registry: "{{ content_provider_os_registry_url | split('/') | first }}"
-      cifmw_test_operator_tempest_namespace: "{{ content_provider_os_registry_url | split('/') | last }}"
-      cifmw_test_operator_tempest_image_tag: "{{ content_provider_dlrn_md5_hash }}"
+      cifmw_test_operator_tempest_registry: >-
+        {{
+          content_provider_os_registry_url | split('/') | first
+          if content_provider_os_registry_url is defined and content_provider_os_registry_url != 'null'
+          else omit
+        }}
+      cifmw_test_operator_tempest_namespace: >-
+        {{
+          content_provider_os_registry_url | split('/') | last
+          if content_provider_os_registry_url is defined and content_provider_os_registry_url != 'null'
+          else omit
+        }}
+      cifmw_test_operator_tempest_image_tag: "{{ content_provider_dlrn_md5_hash | default(omit) }}"
       cifmw_test_operator_tempest_extra_images:
-          # TODO(chandan): Replace rocky qcow2 url once rhos-ops hosts it
-        - URL: "https://chandankumar.fedorapeople.org/rocky9_latest_neutron_whitebox.qcow2"
+        - URL: "https://github.com/eduolivares/openstack-k8s-operators-ci/releases/download/v1.0.0-beta/wntp-custom-v1.0.0-beta.qcow2"
           name: custom_neutron_guest
           diskFormat: qcow2
           ID: "11111111-1111-1111-1111-111111111111"