diff --git a/LuaLibs/BeamLib.lua b/LuaLibs/BeamLib.lua
index 97c94d5..9238635 100644
--- a/LuaLibs/BeamLib.lua
+++ b/LuaLibs/BeamLib.lua
@@ -528,9 +528,9 @@ function BeamLib.GetPieceGeneralParameters( Part, DefaultGeneralParamList)
             GeneralParameters[DefaultGeneralParamList[i].sName] = xParameterValue
          end
       else
-         if GENERAL_PARAMETERS.BTL and GENERAL_PARAMETERS.BTL[Part.sBTLInfo] and GENERAL_PARAMETERS.BTL[Part.sBTLInfo][DefaultGeneralParamList[i].sName] then
+         if GENERAL_PARAMETERS.BTL and GENERAL_PARAMETERS.BTL[Part.sBTLInfo] and GENERAL_PARAMETERS.BTL[Part.sBTLInfo][DefaultGeneralParamList[i].sName] ~= nil then
             GeneralParameters[DefaultGeneralParamList[i].sName] = GENERAL_PARAMETERS.BTL[Part.sBTLInfo][DefaultGeneralParamList[i].sName]
-         elseif GENERAL_PARAMETERS.PROJECT[DefaultGeneralParamList[i].sName] then
+         elseif GENERAL_PARAMETERS.PROJECT[DefaultGeneralParamList[i].sName] ~= nil then
             GeneralParameters[DefaultGeneralParamList[i].sName] = GENERAL_PARAMETERS.PROJECT[DefaultGeneralParamList[i].sName]
          end
       end
diff --git a/StrategyLibs/BLADETOWASTE.lua b/StrategyLibs/BLADETOWASTE.lua
index 37332ed..73690a8 100644
--- a/StrategyLibs/BLADETOWASTE.lua
+++ b/StrategyLibs/BLADETOWASTE.lua
@@ -644,8 +644,7 @@ local function CutWholeWaste( Proc, Part, OptionalParameters)
       Cutting = FaceByBlade.Make( Proc, Part, Proc.Faces[1], EdgeToMachine, OptionalParametersFaceByBlade)
 
    -- se taglio da un lato non ce la fa, si prova da due lati
-   -- TODO valutare se deve funzionare solo per i rettangoli
-   elseif FaceData.IsFaceParallelogram( Proc.Faces[1]) then
+   elseif FaceData.IsFaceRectangle( Proc.Faces[1]) then
 
       local CuttingParametersList
       CuttingParametersList, EdgeToMachine =  GetDualSideCutStrategy( Proc, Part, OptionalParameters)
@@ -742,6 +741,7 @@ local function CutWithDicing( Proc, Part, OptionalParameters)
    local dExtendAfterTail = OptionalParameters.dExtendAfterTail or 10000
    local b3BoxDicing = OptionalParameters.b3BoxDicing
    local bSaveAddedGeometries = OptionalParameters.bSaveAddedGeometries
+   local bReduceBladePath = OptionalParameters.bReduceBladePath or false
    if bSaveAddedGeometries == nil then
       bSaveAddedGeometries = true
    end
@@ -858,7 +858,8 @@ local function CutWithDicing( Proc, Part, OptionalParameters)
          -- TODO ridurre con bReduceBladePath anche questi tagli?
          local OptionalParametersCutWholeWaste = {
             nToolIndex = nToolIndex,
-            dExtendAfterTail = dExtendAfterTail
+            dExtendAfterTail = dExtendAfterTail,
+            bReduceBladePath = bReduceBladePath
          }
          local CutWholeWasteMachinings, CutWholeWasteResult = CutWholeWaste( ProcTrimesh, Part, OptionalParametersCutWholeWaste)
 
diff --git a/StrategyLibs/FACEBYBLADE.lua b/StrategyLibs/FACEBYBLADE.lua
index 412d229..1d27f69 100644
--- a/StrategyLibs/FACEBYBLADE.lua
+++ b/StrategyLibs/FACEBYBLADE.lua
@@ -349,7 +349,7 @@ function FACEBYBLADE.Make( Proc, Part, FaceToMachine, EdgeToMachine, OptionalPar
       end
 
       -- se OppositeToolDirectionMode è Optimized, se possibile e necessario, si attiva la lavorazione dal lato opposto per garantire taglio concorde e verso l'alto (massima qualità)
-      if ( OppositeToolDirectionMode == 'Optimized') and ( Proc.nFct == 1) and ( FaceData.IsFaceParallelogram( FaceToMachine)) then
+      if ( OppositeToolDirectionMode == 'Optimized') and ( Proc.nFct == 1) and ( FaceData.IsFaceRectangle( FaceToMachine)) then
 
          OppositeToolDirectionMode = 'Disabled'