diff --git a/generic.lua b/generic.lua
index 0cce2e8..60c3d47 100644
--- a/generic.lua
+++ b/generic.lua
@@ -80,7 +80,7 @@ function add_sign(city, city_descrip, line, line_descrip, extra_width, extra_hei
         sunlight_propagates = true,
         walkable = false
     })
-    metrosigns.register_sign(city_descrip, node, metrosigns.writer.box_units)
+    metrosigns.register_sign(city_descrip, node, metrosigns.writer.sign_units)
 
 end
 
diff --git a/init.lua b/init.lua
index 01f6f3c..debb492 100644
--- a/init.lua
+++ b/init.lua
@@ -38,7 +38,7 @@
 metrosigns = {}
 metrosigns.name = "metrosigns"
 metrosigns.ver_max = 1
-metrosigns.ver_min = 27
+metrosigns.ver_min = 28
 metrosigns.ver_rev = 0
 
 metrosigns.writer = {}
@@ -89,11 +89,11 @@ metrosigns.writer.cartridge_max = 60000
 -- Amount of ink used for one unit
 metrosigns.writer.cartridge_min = 1000
 -- Number of units used for printing various kinds of sign
--- (The printing capacity of a cartridge was doubled in v1.12.0)
+-- (The printing capacity of a cartridge was doubled in v1.12.0, but reduced slightly in v1.28.0)
 metrosigns.writer.box_units = 15
-metrosigns.writer.sign_units = 3
-metrosigns.writer.map_units = 6
-metrosigns.writer.text_units = 6
+metrosigns.writer.sign_units = 5
+metrosigns.writer.map_units = 10
+metrosigns.writer.text_units = 10
 
 -- Used in material copied from advtrains_subwayblocks and trainblocks
 box_groups = {cracky = 3}