diff --git a/brozzler/behaviors.yaml b/brozzler/behaviors.yaml
index 8aa98ef..db97a55 100644
--- a/brozzler/behaviors.yaml
+++ b/brozzler/behaviors.yaml
@@ -55,8 +55,8 @@
   behavior_js_template: umbraBehavior.js.j2
   default_parameters:
     actions:
-      - selector: .slideshow
-      - selector: .slideshow-overlay__container__left__nav__next
+      - selector: .slideshow-card__overlay
+      - selector: .slideshow__next
 -
   url_regex: '^https?://(?:www\.)?brooklynmuseum\.org/exhibitions/.*$'
   behavior_js_template: simpleclicks.js.j2
@@ -106,7 +106,14 @@
      click_css_selector: button.playButton.medium
      click_until_hard_timeout: False
   request_idle_timeout_sec: 10
-- # https://webarchive.jira.com/browse/ARI-5453 / ARI-5391
+- # https://webarchive.jira.com/browse/ARI-4690
+  url_regex: '^https?://(?:www\.)?youtube.com/.*$'
+  behavior_js_template: simpleclicks.js.j2
+  default_parameters:
+     click_css_selector: span.load-more-text
+     click_until_hard_timeout: False
+  request_idle_timeout_sec: 10
+- # https://webarchive.jira.com/browse/ARI-5453
   url_regex: '^https?://.*\.wixsite.com/.*$'
   behavior_js_template: simpleclicks.js.j2
   default_parameters:
diff --git a/brozzler/js-templates/umbraBehavior.js.j2 b/brozzler/js-templates/umbraBehavior.js.j2
index 7947adf..10b8e14 100644
--- a/brozzler/js-templates/umbraBehavior.js.j2
+++ b/brozzler/js-templates/umbraBehavior.js.j2
@@ -24,6 +24,8 @@ var umbraBehavior = {
     intervalId : null,
     state : null,
 
+    //actions : [{'selector': 'div.teaser, li.pager__item a'}],
+    //actions : [{'selector': '.slideshow-card__overlay'}, {'selector': '.slideshow__next'}],
     actions : {{actions|json}},
     k : 0,