diff --git a/coal-crafter.lua b/coal-crafter.lua
index fe76098..264e8b8 100644
--- a/coal-crafter.lua
+++ b/coal-crafter.lua
@@ -1,6 +1,6 @@
 local turtleUtils = require('libs/turtle-utils')
 
-local NB_NEEDED_COAL = 64 * 2
+local NB_NEEDED_COAL = 64 * 8
 local WAIT_INVENTORY_TIME = 3
 local IDLE_TIME = 30
 local IDLE_TIME_ENOUGH_COAL = 120
diff --git a/mystical-upgrader.lua b/mystical-upgrader.lua
index c7f2194..3fb85e1 100644
--- a/mystical-upgrader.lua
+++ b/mystical-upgrader.lua
@@ -1,7 +1,7 @@
 local turtleUtils = require('libs/turtle-utils')
 
-local NB_ROWS = 1
-local DIRECTION = 'right' -- 'left' | 'right'
+local NB_ROWS = 8
+local DIRECTION = 'left' -- 'left' | 'right'
 local FILL_BLOCK = 'minecraft:cobblestone'
 
 local LEVEL_PER_TIER = 12