diff --git a/tetris/modes/big_a2.lua b/tetris/modes/big_a2.lua
index 3ea9f98..a517e86 100755
--- a/tetris/modes/big_a2.lua
+++ b/tetris/modes/big_a2.lua
@@ -249,7 +249,7 @@ function MarathonA2Game:updateGrade(cleared_lines)
 	end
 end
 
-local tetris_requirements = { [0] = 2, 2, 2, 2, 2, 1, 1, 1, 1, 1 }
+local tetris_requirements = { [0] = 2, 2, 2, 2, 2, 1, 1, 1, 1, 0 }
 
 function MarathonA2Game:qualifiesForMRoll()
 	if not self.clear then return false end
diff --git a/tetris/modes/marathon_a2.lua b/tetris/modes/marathon_a2.lua
index 7b04622..20abbfc 100644
--- a/tetris/modes/marathon_a2.lua
+++ b/tetris/modes/marathon_a2.lua
@@ -253,7 +253,7 @@ function MarathonA2Game:updateGrade(cleared_lines)
 	end
 end
 
-local tetris_requirements = { [0] = 2, 2, 2, 2, 2, 1, 1, 1, 1, 1 }
+local tetris_requirements = { [0] = 2, 2, 2, 2, 2, 1, 1, 1, 1, 0 }
 
 function MarathonA2Game:qualifiesForMRoll()
 	if not self.clear then return false end
@@ -280,7 +280,7 @@ function MarathonA2Game:qualifiesForMRoll()
 			return false
 		end
 	end
-	if self.grade < 17 or self.frames > frameTime(9,30) then
+	if self.grade < 17 or self.frames > frameTime(8,45) then
 		return false
 	end
 	return true
diff --git a/tetris/modes/marathon_ax4.lua b/tetris/modes/marathon_ax4.lua
index 5495c41..6554cc0 100644
--- a/tetris/modes/marathon_ax4.lua
+++ b/tetris/modes/marathon_ax4.lua
@@ -98,6 +98,7 @@ function MarathonAX4Game:onLineClear(cleared_row_count)
 		self:updateSectionTimes(self.lines, new_lines)
 		self.lines = math.min(new_lines, 150)
 		if self.lines == 150 then
+			self.grid:clear()
 			self.clear = true
 			self.roll_frames = -150
 		end