diff --git a/tetris/modes/big_a2.lua b/tetris/modes/big_a2.lua
index 73d8034..51d06ff 100755
--- a/tetris/modes/big_a2.lua
+++ b/tetris/modes/big_a2.lua
@@ -10,41 +10,10 @@ BigA2Game.tagline = "Big blocks in the most celebrated TGM mode!"
 function BigA2Game:new()
 	BigA2Game.super:new()
 	self.big_mode = true
-end
-
-function BigA2Game:updateScore(level, drop_bonus, cleared_lines)
-	cleared_lines = cleared_lines / 2
-	if not self.clear then
-		self:updateGrade(cleared_lines)
-		if cleared_lines >= 4 then
-			self.tetris_count = self.tetris_count + 1
-		end
-		if self.grid:checkForBravo(cleared_lines) then self.bravo = 4 else self.bravo = 1 end
-		if cleared_lines > 0 then
-			self.combo = self.combo + (cleared_lines - 1) * 2
-			self.score = self.score + (
-				(math.ceil((level + cleared_lines) / 4) + drop_bonus) *
-				cleared_lines * self.combo * self.bravo
-			)
-		else
-			self.combo = 1
-		end
-		self.drop_bonus = 0
-	else self.lines = self.lines + cleared_lines end
-end
-
-function BigA2Game:onLineClear(cleared_row_count)
-	cleared_row_count = cleared_row_count / 2
-	self:updateSectionTimes(self.level, self.level + cleared_row_count)
-	self.level = math.min(self.level + cleared_row_count, 999)
-	if self.level == 999 and not self.clear then
-		self.clear = true
-		self.grid:clear()
-		if self:qualifiesForMRoll() then self.grade = 32 end
-		self.roll_frames = -150
+	local getClearedRowCount = self.grid.getClearedRowCount
+	self.grid.getClearedRowCount = function(self)
+		return getClearedRowCount(self) / 2
 	end
-	self.lock_drop = self.level >= 900
-	self.lock_hard_drop = self.level >= 900
 end
 
 return BigA2Game
\ No newline at end of file