diff --git a/parts/eventsets/stack_e.lua b/parts/eventsets/stack_e.lua
index caf95e1a..9d2eb852 100644
--- a/parts/eventsets/stack_e.lua
+++ b/parts/eventsets/stack_e.lua
@@ -1,4 +1,5 @@
 return{
+    fieldH=20,
     fillClear=false,
     mesDisp=function(P)
         setFont(60)
@@ -6,12 +7,12 @@ return{
         mText(TEXTOBJ.line,63,350)
     end,
     dropPiece=function(P)
-        if #P.field>P.gameEnv.fieldH then
+        if #P.field>20 then
             local cc=P:clearFilledLines(P.garbageBeneath+1,#P.field-P.garbageBeneath)
-            local h=math.ceil((P.gameEnv.fieldH-cc-P.garbageBeneath)/2)
+            local h=20-cc-P.garbageBeneath
             if h>0 then
                 P:garbageRise(21,h,2e10-1)
-                if P.garbageBeneath>=P.gameEnv.fieldH then
+                if P.garbageBeneath>=20 then
                     P:lose()
                 end
             end
diff --git a/parts/eventsets/stack_h.lua b/parts/eventsets/stack_h.lua
index 9919ebae..e4b2138f 100644
--- a/parts/eventsets/stack_h.lua
+++ b/parts/eventsets/stack_h.lua
@@ -1,4 +1,5 @@
 return{
+    fieldH=21,
     fillClear=false,
     mesDisp=function(P)
         setFont(60)
@@ -6,12 +7,12 @@ return{
         mText(TEXTOBJ.line,63,350)
     end,
     dropPiece=function(P)
-        if #P.field>P.gameEnv.fieldH then
+        if #P.field>20 then
             local cc=P:clearFilledLines(P.garbageBeneath+1,#P.field-P.garbageBeneath)
-            local h=P.gameEnv.fieldH-cc-P.garbageBeneath-2
+            local h=20-cc-P.garbageBeneath-2
             if h>0 then
                 P:garbageRise(21,h,2e10-1)
-                if P.garbageBeneath>=P.gameEnv.fieldH then
+                if P.garbageBeneath>=20 then
                     P:lose()
                 end
             end
diff --git a/parts/eventsets/stack_u.lua b/parts/eventsets/stack_u.lua
index e02e90bb..c0cb83e9 100644
--- a/parts/eventsets/stack_u.lua
+++ b/parts/eventsets/stack_u.lua
@@ -1,4 +1,5 @@
 return{
+    fieldH=21,
     fillClear=false,
     mesDisp=function(P)
         setFont(60)
@@ -6,12 +7,12 @@ return{
         mText(TEXTOBJ.line,63,350)
     end,
     dropPiece=function(P)
-        if #P.field>P.gameEnv.fieldH then
+        if #P.field>20 then
             local cc=P:clearFilledLines(P.garbageBeneath+1,#P.field-P.garbageBeneath)
-            local h=P.gameEnv.fieldH-cc-P.garbageBeneath-3
+            local h=20-cc-P.garbageBeneath-3
             if h>0 then
                 P:garbageRise(21,h,2e10-1)
-                if P.garbageBeneath>=P.gameEnv.fieldH then
+                if P.garbageBeneath>=20 then
                     P:lose()
                 end
             end
diff --git a/parts/modes/stack_h.lua b/parts/modes/stack_h.lua
index 41d5e39c..721e57cf 100644
--- a/parts/modes/stack_h.lua
+++ b/parts/modes/stack_h.lua
@@ -3,7 +3,6 @@ return{
     env={
         drop=60,lock=60,
         wait=0,fall=50,
-        fieldH=21,
         highCam=false,
         garbageSpeed=30,
         seqData={1,2,3,4,5,6,7,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25},
diff --git a/parts/modes/stack_u.lua b/parts/modes/stack_u.lua
index 854f2b1e..77557785 100644
--- a/parts/modes/stack_u.lua
+++ b/parts/modes/stack_u.lua
@@ -3,7 +3,6 @@ return{
     env={
         drop=60,lock=60,
         wait=0,fall=50,
-        fieldH=21,
         highCam=false,
         garbageSpeed=30,
         seqData={8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25},