===================================================================
--- original.js
+++ change.js
@@ -1041,9 +1041,9 @@
 var ROW_SPEED_INCREASE = 0.04;
 var ROW_SPEED_INCREASE_MIN = 0.01;
 var ROW_SPEED_INCREASE_FACTOR = 0.9;
 var COL_SLIP_MIN = 10;
-var COL_SLIP_MAX = 30;
+var COL_SLIP_MAX = 50;
 var COL_SLIP_TIME = 750;
 var COL_TIMEOUT_MIN = 1000;
 var COL_TIMEOUT_MAX = 10000;
 var COL_RISE_FACTOR = 0.2;