diff --git a/DBC_Converter.py b/DBC_Converter.py
index fc32371..2146ba7 100644
--- a/DBC_Converter.py
+++ b/DBC_Converter.py
@@ -160,10 +160,10 @@ class MainView(QtWidgets.QMainWindow):
 
         # 보기 메뉴 항목 추가
         size_menu = view_menu.addMenu("창크기")
+        size_menu.addAction("기본", lambda: self.setWindowSize("default")).setShortcut('Ctrl+0')
         size_menu.addAction("작게", lambda: self.setWindowSize("small")).setShortcut('Ctrl+1')
         size_menu.addAction("보통", lambda: self.setWindowSize("medium")).setShortcut('Ctrl+2')
         size_menu.addAction("크게", lambda: self.setWindowSize("large")).setShortcut('Ctrl+3')
-        size_menu.addAction("기본", lambda: self.setWindowSize("default")).setShortcut('Ctrl+0')
         size_menu.addAction("자동", lambda: self.setWindowSize("auto")).setShortcut('Ctrl+4')
 
         sort_menu = view_menu.addMenu("정렬")
diff --git a/DBC_Converter_RX.py b/DBC_Converter_RX.py
index 2037220..2a45b88 100644
--- a/DBC_Converter_RX.py
+++ b/DBC_Converter_RX.py
@@ -1,7 +1,6 @@
 import sys
 from DBC_Converter_Data_Parsing import load_dbc_file
 
-
 #============================== Generate Globals ==============================#
 def generate_globals(signals, C_file, header_file):
     if not signals:
@@ -31,7 +30,6 @@ def generate_globals(signals, C_file, header_file):
         f.write("\n#endif // GENERATED_GLOBALS_H\n")
     print(f"[INFO] Globals and extern declarations written to {C_file} and {header_file}")
 
-
 #============================== Generate VCU RX Function ==============================#
 def generate_vcu_rx_function_with_factors(signals, output_file):
     if not signals:
@@ -74,7 +72,7 @@ def generate_vcu_rx_function_with_factors(signals, output_file):
             continue  # Skip this message if no signal has RX ECU name as VCU
 
         c_file_content += f"""
-void {message_name}_RX_{message_info['ID']}(void)
+void Receive_{message_name}_{message_info['ID']}(void)
 {{
     struct {{
 """
@@ -100,16 +98,16 @@ void {message_name}_RX_{message_info['ID']}(void)
             start_bit = signal["msb"] % 8
             signal_length = signal["Length"]
             if signal["Byte order"] == 0:  # Motorola (Big Endian)
-                shift_expr = f"(CAN_ch[0].rx.buf[{start_byte}] >> shift{start_bit})"
+                shift_expr = f"(CAN_ch[0].rx.buf[{start_byte}] << shift{7 - start_bit})"
                 if signal_length > 8:
                     # Handle multi-byte signals
                     multi_byte_expr = []
                     for i in range((signal_length + 7) // 8):
-                        byte_shift = i * 8
+                        byte_shift = (7 - start_bit) + (i * 8)
                         if i == 0:
-                            multi_byte_expr.append(f"(CAN_ch[0].rx.buf[{start_byte + i}] >> shift{start_bit})")
+                            multi_byte_expr.append(f"(CAN_ch[0].rx.buf[{start_byte + i}] << shift{7 - start_bit})")
                         else:
-                            multi_byte_expr.append(f"(CAN_ch[0].rx.buf[{start_byte + i}] << shift{byte_shift})")
+                            multi_byte_expr.append(f"(CAN_ch[0].rx.buf[{start_byte + i}] >> shift{byte_shift})")
                     shift_expr = " | ".join(multi_byte_expr)
             else:  # Intel (Little Endian)
                 shift_expr = f"(CAN_ch[0].rx.buf[{start_byte}] >> shift{start_bit})"
@@ -136,10 +134,7 @@ void {message_name}_RX_{message_info['ID']}(void)
             factor = f" * {factor_name}" if signal['Factor'] != 1 else ""
             offset = f" + {offset_name}" if signal['Offset'] != 0 else ""
             temp_var = f"{temp_struct_name}.{signal['Signal name']}_temp"
-            if signal["Byte order"] == 1:
-                c_file_content += f"    VCU.RX.{message_name}_{message_info['ID']}.{signal['Signal name']} = ({temp_var}{factor}){offset};\n"
-            else:
-                c_file_content += f"    VCU.RX.{message_name}_{message_info['ID']}.{signal['Signal name']} = {temp_var}{factor}{offset};\n"
+            c_file_content += f"    VCU.RX.{message_name}_{message_info['ID']}.{signal['Signal name']} = ({temp_var}{factor}){offset};\n"
 
         c_file_content += "}\n"
 
@@ -148,7 +143,6 @@ void {message_name}_RX_{message_info['ID']}(void)
         c_file.write(c_file_content)
     print(f"Generated RX function C file with Factors and Offsets: {output_file}")
 
-
 #============================== Generate Input Function ==============================#
 def generate_input_functions(signals, output_file):
     if not signals:
@@ -165,7 +159,6 @@ def generate_input_functions(signals, output_file):
             f.write("}\n\n")
     print(f"[INFO] Input functions written to {output_file}")
 
-
 #============================== Generate Initialization ==============================#
 def generate_initialization(signals, output_file):
     if not signals:
@@ -192,7 +185,6 @@ def generate_initialization(signals, output_file):
         f.write("}\n")
     print(f"[INFO] Initialization function written to {output_file}")
 
-
 #============================== Main ==============================#
 if __name__ == "__main__":
     dbc_file_path = sys.argv[1]
diff --git a/__pycache__/DBC_Converter_Data_Parsing.cpython-313.pyc b/__pycache__/DBC_Converter_Data_Parsing.cpython-313.pyc
index de1648f..f9d1021 100644
Binary files a/__pycache__/DBC_Converter_Data_Parsing.cpython-313.pyc and b/__pycache__/DBC_Converter_Data_Parsing.cpython-313.pyc differ