diff --git a/LuaLibs/MachiningLib.lua b/LuaLibs/MachiningLib.lua
index 19d1465..b6ad0d5 100644
--- a/LuaLibs/MachiningLib.lua
+++ b/LuaLibs/MachiningLib.lua
@@ -1593,8 +1593,8 @@ function MachiningLib.GetTimeToMachineAllStepsWithLeadInOut( Machining, Part)
          Machining.CloneStepsLongitudinal.nCount = 1
       end
       -- stima tempi di lavorazione per i diversi tratti
-      local dTimeToMachineLeadIn = ( Machining.dDepthToMachine + ( TOOLS[Machining.nToolIndex].SetupInfo.dZSafeDelta or 60) + EgtMdbGetGeneralParam( MCH_GP.SAFEZ)) / dToolStartFeed
-      local dTimeToMachineLeadOut = ( Machining.dDepthToMachine + ( TOOLS[Machining.nToolIndex].SetupInfo.dZSafeDelta or 60) + EgtMdbGetGeneralParam( MCH_GP.SAFEZ)) / dToolEndFeed
+      local dTimeToMachineLeadIn = ( Machining.dDepthToMachine + ( TOOLS[Machining.nToolIndex].SetupInfo.dZSafeDelta or 0) + EgtMdbGetGeneralParam( MCH_GP.SAFEZ)) / dToolStartFeed
+      local dTimeToMachineLeadOut = ( Machining.dDepthToMachine + ( TOOLS[Machining.nToolIndex].SetupInfo.dZSafeDelta or 0) + EgtMdbGetGeneralParam( MCH_GP.SAFEZ)) / dToolEndFeed
       local dTimeToMachineEdge = Machining.dLengthToMachine / dToolFeed
       -- calcolo lunghezze e tempi
       if Machining.Steps.nStepType == MCH_MILL_ST.ZIGZAG then
diff --git a/Strategies/Standard/STR0003/STR0003.lua b/Strategies/Standard/STR0003/STR0003.lua
index 0650064..4ceb742 100644
--- a/Strategies/Standard/STR0003/STR0003.lua
+++ b/Strategies/Standard/STR0003/STR0003.lua
@@ -415,7 +415,8 @@ function STR0003.Make( bAddMachining, Proc, Part, CustomParameters)
       end
       
       -- ancora materiale residuo - se possibile si lavora dal lato
-      if Chainsaw.Result.Bottom[#Chainsaw.Result.Bottom].dResidualDepth > 10 * GEO.EPS_SMALL
+      if ( Chainsaw.Result.Bottom[#Chainsaw.Result.Bottom].dResidualDepth > 10 * GEO.EPS_SMALL
+         or not Chainsaw.Result.Bottom[#Chainsaw.Result.Bottom].bIsApplicable)
          and #Proc.MainFaces.SideFaces == 1 then
 
          -- si lavora solamente l'impronta lama sul fondo
@@ -698,7 +699,13 @@ function STR0003.Make( bAddMachining, Proc, Part, CustomParameters)
       else
          Strategy.Result.sStatus = 'Not-Completed'
       end
-      Strategy.Result.dQuality = FeatureLib.GetStrategyQuality( Result)
+
+      if Proc.Topology.sName == 'Groove-4-Blind' or Proc.Topology.sName == 'Pocket-5-Blind' then
+         Strategy.Result.dQuality = FeatureLib.GetStrategyQuality( 'SEMI')
+      else
+         Strategy.Result.dQuality = FeatureLib.GetStrategyQuality( Result)
+      end
+
       Strategy.Result.dTimeToMachine = FeatureLib.GetStrategyTimeToMachine( Result)
       Strategy.Result.dMRR = ( dFeatureVolume / Strategy.Result.dTimeToMachine) / pow( 10, 6)
    else
diff --git a/StrategyLibs/FACEBYCHAINSAW.lua b/StrategyLibs/FACEBYCHAINSAW.lua
index 645584f..8e3dbcc 100644
--- a/StrategyLibs/FACEBYCHAINSAW.lua
+++ b/StrategyLibs/FACEBYCHAINSAW.lua
@@ -44,8 +44,9 @@ local function CalculateLeadInOut( Machining, EdgeToMachine, sSideToMachine, dLe
    end
 
    -- punti dell'attacco
-   LeadIn.ptPoint = EdgeToMachine.ptStart - EdgeToMachine.vtEdge * LeadIn.dStartAddLength + EdgeToMachine.vtN * ( EdgeToMachine.dElevation - Machining.dDepthToMachine)
-   LeadOut.ptPoint = EdgeToMachine.ptEnd + EdgeToMachine.vtEdge * LeadOut.dEndAddLength + EdgeToMachine.vtN * ( EdgeToMachine.dElevation - Machining.dDepthToMachine)
+   local dLengthToAdd = EgtIf( Machining.bToolInvert, -Machining.dStartSafetyLength, EdgeToMachine.dElevation - ( Machining.dMaxElev or 0) + Machining.dStartSafetyLength)
+   LeadIn.ptPoint = EdgeToMachine.ptStart - EdgeToMachine.vtEdge * LeadIn.dStartAddLength + EdgeToMachine.vtN * dLengthToAdd
+   LeadOut.ptPoint = EdgeToMachine.ptEnd + EdgeToMachine.vtEdge * LeadOut.dEndAddLength + EdgeToMachine.vtN * dLengthToAdd
 
    return LeadIn, LeadOut
 end
@@ -173,7 +174,7 @@ function FACEBYCHAINSAW.Make( Proc, Part, FaceToMachine, EdgeToMachine, Optional
    -- offset radiale
    Mortising.dRadialOffset = 0
    -- distanza di sicurezza
-   Mortising.dStartSafetyLength = max( EdgeToMachine.dElevation, ( TOOLS[Mortising.nToolIndex].SetupInfo.dZSafeDelta or 60) + EgtMdbGetGeneralParam( MCH_GP.SAFEZ))
+   Mortising.dStartSafetyLength = ( TOOLS[Mortising.nToolIndex].SetupInfo.dZSafeDelta or 0) + EgtMdbGetGeneralParam( MCH_GP.SAFEZ)
    -- overlap
    Mortising.dOverlap = 0
    -- step