diff --git a/river/init b/river/init
index 9459d58..c367405 100755
--- a/river/init
+++ b/river/init
@@ -126,20 +126,25 @@ else
 	riverctl set-view-tags $((1 << (11 - 1)))
 fi
 
-# Mod+U and Mod+I to increase/decrease the main size
-riverctl map normal $mod U send-layout-cmd river-ultitile "set integer main-size += 5"
-riverctl map normal $mod I send-layout-cmd river-ultitile "set integer main-size -= 5"
+# Increase/decrease the main size
+riverctl map normal $mod U send-layout-cmd river-ultitile "set integer main-size += 4"
+riverctl map normal $mod I send-layout-cmd river-ultitile "set integer main-size -= 4"
 
-# Mod+Shift+U and Mod+Shift+I to decrease/increase the main count
-riverctl map normal $mod+Shift U send-layout-cmd river-ultitile "set integer main-count -= 1"
-riverctl map normal $mod+Shift I send-layout-cmd river-ultitile "set integer main-count += 1"
+# Decrease/increase the main size if it is in the center (on wide screens)
+riverctl map normal $mod+Shift U send-layout-cmd river-ultitile "set global integer main-size-if-only-centered-main += 4"
+riverctl map normal $mod+Shift I send-layout-cmd river-ultitile "set global integer main-size-if-only-centered-main -= 4"
 
-# Mod+{Up,Right,Down,Left} to change layout
+# Decrease/increase the main count
+riverctl map normal $mod N     send-layout-cmd river-ultitile "set integer main-count -= 1"
+riverctl map normal $mod comma send-layout-cmd river-ultitile "set integer main-count += 1"
+
+# Change layout
 riverctl map normal $mod Up    send-layout-cmd river-ultitile "set string layout = vstack"
 riverctl map normal $mod Right send-layout-cmd river-ultitile "set string layout = hstack"
 riverctl map normal $mod Down  send-layout-cmd river-ultitile "set string layout = monocle"
 riverctl map normal $mod Left  send-layout-cmd river-ultitile "set string layout = main"
 
+# Cycle through layouts on all tags/outputs
 riverctl map normal $mod E spawn "riverctl send-layout-cmd river-ultitile 'unset-all-local layout'; riverctl send-layout-cmd river-ultitile 'set global string layout @ main hstack vstack'"