diff --git a/miner.lua b/miner.lua
index 53a4d51..3fe76b0 100644
--- a/miner.lua
+++ b/miner.lua
@@ -2,10 +2,10 @@ local robotApi = require('robot')
 local turtleUtils = require('turtle-utils')
 
 local config = {
-  startY = 122,
+  startY = 109,
   targetY = 109,
-  height = 3,
-  size = 4
+  height = 4,
+  size = 16
 }
 
 local INITIAL_TARGET_Y = config.targetY - config.startY