diff --git a/resources/profiles/BBL.json b/resources/profiles/BBL.json
index 736e4c08f..7d9eb5a7e 100644
--- a/resources/profiles/BBL.json
+++ b/resources/profiles/BBL.json
@@ -1,7 +1,7 @@
 {
     "name": "Bambulab",
     "url": "http://www.bambulab.com/Parameters/vendor/BBL.json",
-    "version": "01.01.00.13",
+    "version": "01.01.00.14",
     "force_update": "0",
     "description": "the initial version of BBL configurations",
     "machine_model_list": [
diff --git a/resources/profiles/BBL/filament/Bambu PLA Basic @base.json b/resources/profiles/BBL/filament/Bambu PLA Basic @base.json
index 9bb4ae56e..d450ad432 100644
--- a/resources/profiles/BBL/filament/Bambu PLA Basic @base.json	
+++ b/resources/profiles/BBL/filament/Bambu PLA Basic @base.json	
@@ -12,7 +12,7 @@
         "25.4"
     ],
     "filament_flow_ratio": [
-        "0.96"
+        "0.98"
     ],
     "filament_density": [
         "1.26"
diff --git a/resources/profiles/BBL/filament/Bambu PLA Matte @base.json b/resources/profiles/BBL/filament/Bambu PLA Matte @base.json
index f49165d16..b6001992d 100644
--- a/resources/profiles/BBL/filament/Bambu PLA Matte @base.json	
+++ b/resources/profiles/BBL/filament/Bambu PLA Matte @base.json	
@@ -15,6 +15,6 @@
         "1.32"
     ],
     "filament_flow_ratio": [
-        "0.95"
+        "0.98"
     ]
 }
diff --git a/resources/profiles/BBL/filament/Generic PETG.json b/resources/profiles/BBL/filament/Generic PETG.json
index 576fe15b0..6bc8c2025 100644
--- a/resources/profiles/BBL/filament/Generic PETG.json	
+++ b/resources/profiles/BBL/filament/Generic PETG.json	
@@ -28,7 +28,7 @@
         "40"
     ],
     "slow_down_min_speed": [
-        "40"
+        "20"
     ],
     "slow_down_layer_time": [
         "8"
diff --git a/resources/profiles/BBL/filament/Generic PLA.json b/resources/profiles/BBL/filament/Generic PLA.json
index f416abbe7..cf52396cf 100644
--- a/resources/profiles/BBL/filament/Generic PLA.json	
+++ b/resources/profiles/BBL/filament/Generic PLA.json	
@@ -7,7 +7,7 @@
     "instantiation": "true",
     "inherits": "fdm_filament_pla",
     "filament_flow_ratio": [
-        "0.95"
+        "0.98"
     ],
     "filament_max_volumetric_speed": [
         "12"
diff --git a/resources/profiles/BBL/filament/PolyTerra PLA @base.json b/resources/profiles/BBL/filament/PolyTerra PLA @base.json
index 96b5f1672..40e3785d0 100644
--- a/resources/profiles/BBL/filament/PolyTerra PLA @base.json	
+++ b/resources/profiles/BBL/filament/PolyTerra PLA @base.json	
@@ -15,6 +15,6 @@
         "1.24"
     ],
     "filament_flow_ratio": [
-        "0.95"
+        "0.98"
     ]
 }
diff --git a/resources/profiles/BBL/filament/fdm_filament_pla.json b/resources/profiles/BBL/filament/fdm_filament_pla.json
index 388268d37..a3b8a8f88 100644
--- a/resources/profiles/BBL/filament/fdm_filament_pla.json
+++ b/resources/profiles/BBL/filament/fdm_filament_pla.json
@@ -74,7 +74,7 @@
         "230"
     ],
     "slow_down_min_speed": [
-        "50"
+        "20"
     ],
     "slow_down_layer_time": [
         "4"
diff --git a/resources/profiles/BBL/machine/Bambu Lab X1 0.4 nozzle.json b/resources/profiles/BBL/machine/Bambu Lab X1 0.4 nozzle.json
index b82ede4af..ea7a12b48 100644
--- a/resources/profiles/BBL/machine/Bambu Lab X1 0.4 nozzle.json	
+++ b/resources/profiles/BBL/machine/Bambu Lab X1 0.4 nozzle.json	
@@ -13,6 +13,9 @@
   "nozzle_diameter": [
       "0.4"
   ],
+  "extruder_offset": [
+      "0x2"
+  ],
   "bed_exclude_area": [
     "0x0",
     "18x0",
diff --git a/resources/profiles/BBL/machine/Bambu Lab X1 Carbon 0.4 nozzle.json b/resources/profiles/BBL/machine/Bambu Lab X1 Carbon 0.4 nozzle.json
index 12540a441..ce65957dd 100644
--- a/resources/profiles/BBL/machine/Bambu Lab X1 Carbon 0.4 nozzle.json	
+++ b/resources/profiles/BBL/machine/Bambu Lab X1 Carbon 0.4 nozzle.json	
@@ -13,6 +13,9 @@
   "nozzle_diameter": [
       "0.4"
   ],
+  "extruder_offset": [
+      "0x2"
+  ],
   "bed_exclude_area": [
     "0x0",
     "18x0",
diff --git a/src/slic3r/GUI/Tab.cpp b/src/slic3r/GUI/Tab.cpp
index 6fd2a3fa0..638c7f18d 100644
--- a/src/slic3r/GUI/Tab.cpp
+++ b/src/slic3r/GUI/Tab.cpp
@@ -3173,10 +3173,8 @@ void TabPrinter::build_unregular_pages(bool from_initial_build/* = false*/)
             optgroup->append_single_option_line("min_layer_height", "", extruder_idx);
             optgroup->append_single_option_line("max_layer_height", "", extruder_idx);
 
-#if 0
-            //optgroup = page->new_optgroup(L("Position (for multi-extruder printers)"), -1, true);
-            //optgroup->append_single_option_line("extruder_offset", "", extruder_idx);
-#endif
+            optgroup = page->new_optgroup(L("Position"), -1, true);
+            optgroup->append_single_option_line("extruder_offset", "", extruder_idx);
 
             //BBS: don't show retract related config menu in machine page
             optgroup = page->new_optgroup(L("Retraction"));