diff --git a/scene/mode_select.lua b/scene/mode_select.lua
index 0dfb268..c54d8a7 100644
--- a/scene/mode_select.lua
+++ b/scene/mode_select.lua
@@ -8,10 +8,10 @@ current_ruleset = 1
 game_modes = {
 	require 'tetris.modes.marathon_2020',
 	require 'tetris.modes.survival_2020',
-	require 'tetris.modes.demon_mode',
 	require 'tetris.modes.strategy',
 	require 'tetris.modes.interval_training',
 	require 'tetris.modes.pacer_test',
+	require 'tetris.modes.demon_mode',
 	require 'tetris.modes.phantom_mania',
 	require 'tetris.modes.phantom_mania2',
 	require 'tetris.modes.phantom_mania_n',
diff --git a/tetris/modes/marathon_2020.lua b/tetris/modes/marathon_2020.lua
index c8a0770..5d49793 100644
--- a/tetris/modes/marathon_2020.lua
+++ b/tetris/modes/marathon_2020.lua
@@ -165,7 +165,9 @@ function Marathon2020Game:onPieceEnter()
 end
 
 function Marathon2020Game:whilePieceActive()
-	self.grade_point_decay_counter = self.grade_point_decay_counter + self.grade + 2
+	if not self.clear then
+		self.grade_point_decay_counter = self.grade_point_decay_counter + self.grade + 2
+	end
 	if self.grade_point_decay_counter > 240 then
 		self.grade_point_decay_counter = 0
 		self.grade_points = math.max(0, self.grade_points - 1)
@@ -375,19 +377,29 @@ function Marathon2020Game:updateScore(level, drop_bonus, cleared_lines)
 	end
 end
 
-Marathon2020Game.mRollOpacityFunction = function(age)
+Marathon2020Game.rollOpacityFunction = function(age)
 	if age > 300 then return 0
 	elseif age < 240 then return 1
 	else return (300 - age) / 60 end
 end
 
-Marathon2020Game.rollOpacityFunction = function(age)
+Marathon2020Game.mRollOpacityFunction = function(age)
 	if age > 4 then return 0
 	else return 1 - age / 4 end
 end
 
 function Marathon2020Game:qualifiesForMRoll()
 	return false -- until I actually have grading working
+--[[
+
+GM-roll requirements
+
+You qualify for the GM roll if you:
+- Reach level 2020
+- with a grade of 50
+- in less than 13:30.00 total.
+
+]]--
 end
 
 function Marathon2020Game:drawGrid()
diff --git a/tetris/modes/survival_2020.lua b/tetris/modes/survival_2020.lua
index 2573f30..5c44381 100644
--- a/tetris/modes/survival_2020.lua
+++ b/tetris/modes/survival_2020.lua
@@ -36,8 +36,8 @@ function Survival2020Game:getARE()
 	elseif self.level < 300 then return 10
 	elseif self.level < 500 then return 6
 	elseif self.level < 1000 then return 4
-	elseif self.level < 1500 then return 3
-	else return 2 end
+	elseif self.level < 1500 then return 5
+	else return 6 end
 end
 
 function Survival2020Game:getLineARE()
@@ -71,12 +71,12 @@ end
 
 function Survival2020Game:getTotalDelay()
 		if self.level < 500 then return 60
-	elseif self.level < 600 then return 45  -- lock delay: 15
+	elseif self.level < 600 then return 45  -- lock delay: 13
 	elseif self.level < 700 then return 36
 	elseif self.level < 800 then return 27
 	elseif self.level < 900 then return 21
 	elseif self.level < 1000 then return 15
-	elseif self.level < 1100 then return 36  -- lock delay: 11
+	elseif self.level < 1100 then return 36  -- lock delay: 10
 	elseif self.level < 1200 then return 27
 	elseif self.level < 1300 then return 21
 	elseif self.level < 1400 then return 15