diff --git a/parts/modes/dig_eff_100l.lua b/parts/modes/dig_eff_100l.lua
index 18be35b1c..f3b38d087 100644
--- a/parts/modes/dig_eff_100l.lua
+++ b/parts/modes/dig_eff_100l.lua
@@ -13,11 +13,11 @@ return {
         if P.stat.dig<100 then return end
         local P=P.stat.piece
         return
-        P<=260 and 5 or
-        P<=320 and 4 or
-        P<=420 and 3 or
-        P<=520 and 2 or
-        P<=620 and 1 or
+        P<=250 and 5 or
+        P<=300 and 4 or
+        P<=370 and 3 or
+        P<=450 and 2 or
+        P<=550 and 1 or
         0
     end,
 }
diff --git a/parts/modes/dig_eff_10l.lua b/parts/modes/dig_eff_10l.lua
index 3a7630c79..4caa0a242 100644
--- a/parts/modes/dig_eff_10l.lua
+++ b/parts/modes/dig_eff_10l.lua
@@ -13,8 +13,8 @@ return {
         if P.stat.dig<10 then return end
         local P=P.stat.piece
         return
-        P<=12 and 5 or
-        P<=18 and 4 or
+        P<=14 and 5 or
+        P<=20 and 4 or
         P<=25 and 3 or
         P<=30 and 2 or
         P<=40 and 1 or
diff --git a/parts/modes/dig_eff_400l.lua b/parts/modes/dig_eff_400l.lua
index 959755666..c2b1432fb 100644
--- a/parts/modes/dig_eff_400l.lua
+++ b/parts/modes/dig_eff_400l.lua
@@ -13,11 +13,11 @@ return {
         if P.stat.dig<400 then return end
         local P=P.stat.piece
         return
-        P<=1200 and 5 or
-        P<=1400 and 4 or
-        P<=1500 and 3 or
-        P<=1800 and 2 or
-        P<=2000 and 1 or
+        P<=1120 and 5 or
+        P<=1280 and 4 or
+        P<=1440 and 3 or
+        P<=1600 and 2 or
+        P<=1800 and 1 or
         0
     end,
 }
diff --git a/parts/modes/dig_eff_40l.lua b/parts/modes/dig_eff_40l.lua
index b6b4398a7..5c15e492c 100644
--- a/parts/modes/dig_eff_40l.lua
+++ b/parts/modes/dig_eff_40l.lua
@@ -13,11 +13,11 @@ return {
         if P.stat.dig<40 then return end
         local P=P.stat.piece
         return
-        P<=80 and 5 or
-        P<=100 and 4 or
-        P<=120 and 3 or
+        P<=95 and 5 or
+        P<=115 and 4 or
+        P<=130 and 3 or
         P<=160 and 2 or
-        P<=220 and 1 or
+        P<=200 and 1 or
         0
     end,
 }