diff --git a/Common_PF1250.mlse b/Common_PF1250.mlse
index d19060b..fc24a06 100644
--- a/Common_PF1250.mlse
+++ b/Common_PF1250.mlse
@@ -86,7 +86,7 @@ function OnSpecialGetMaxZ()
          local vMZ = {{ Tz=0.85, Ez=440}, { Tz=0.5, Ez=200}, { Tz=-0.01, Ez=5}, { Tz=-0.5, Ez=1}}
          EMC.MAXZ = ParkZ1 + CalcExtraZ( vtTpZm, vtT, vMZ)
       else
-         local vMZ = {{ Tz=0.85, Ez=400}, { Tz=0.7, Ez=300}, { Tz=0.5, Ez=195}, { Tz=0.15, Ez=50}, { Tz=-0.01, Ez=-2}, { Tz=-0.5, Ez=-5}}
+         local vMZ = {{ Tz=0.85, Ez=400}, { Tz=0.7, Ez=300}, { Tz=0.5, Ez=195}, { Tz=0.15, Ez=70}, { Tz=-0.01, Ez=5}, { Tz=-0.5, Ez=1}}
          EMC.MAXZ = ParkZ1 + CalcExtraZ( vtTpZm, vtT, vMZ)
       end
    elseif EMC.HEAD == 'H16' then
@@ -104,7 +104,7 @@ function OnSpecialGetMaxZ()
          local vMZ = {{ Tz=0.85, Ez=440}, { Tz=0.5, Ez=200}, { Tz=-0.01, Ez=5}, { Tz=-0.5, Ez=1}}
          EMC.MAXZ = ParkZ1 + CalcExtraZ( vtTpZm, vtT, vMZ)
       else
-         local vMZ = {{ Tz=0.85, Ez=400}, { Tz=0.7, Ez=300}, { Tz=0.5, Ez=195}, { Tz=0.15, Ez=50}, { Tz=-0.01, Ez=-2}, { Tz=-0.5, Ez=-5}}
+         local vMZ = {{ Tz=0.85, Ez=400}, { Tz=0.7, Ez=300}, { Tz=0.5, Ez=195}, { Tz=0.15, Ez=70}, { Tz=-0.01, Ez=5}, { Tz=-0.5, Ez=1}}
          EMC.MAXZ = ParkZ1 + CalcExtraZ( vtTpZm, vtT, vMZ)
       end
    elseif EMC.HEAD == 'H21' then
diff --git a/UpdateLog.txt b/UpdateLog.txt
index e85cd92..de97e93 100644
--- a/UpdateLog.txt
+++ b/UpdateLog.txt
@@ -1,5 +1,8 @@
            ==== Common_PF1250 Update Log ====
 
+Versione 2.6l4 (16/12/2024)
+- (SIM-GEN) In MLSE ripristinati vecchi valori indici calcolo Z massima. In alcuni casi peggioravano la situazione.
+
 Versione 2.6l3 (16/12/2024)
 - (SIM) Corretto scarico utensile se aggregato. Se non presente utensile di default, non seleziona nulla.
 - (SIM-GEN) In MLSE ritoccati indici calcolo Z massima. Ticket#2210
diff --git a/Version.lua b/Version.lua
index 8368a75..7a783e2 100644
--- a/Version.lua
+++ b/Version.lua
@@ -3,7 +3,7 @@
 
 local InfoCommon_STD_PP = {
    NAME = 'Common_PF1250',            -- nome script PP standard
-   VERSION = '2.6l3',                 -- versione script
+   VERSION = '2.6l4',                 -- versione script
    MIN_MACH_VER_PP_COMMON = '2.5k1'   -- versione minima kernel
 }