diff --git a/Firmware/Configuration.h b/Firmware/Configuration.h
index 5d8b28fea..af36b3616 100644
--- a/Firmware/Configuration.h
+++ b/Firmware/Configuration.h
@@ -17,8 +17,8 @@ extern PGM_P sPrinterName;
 
 // Firmware version
 #define FW_MAJOR 3
-#define FW_MINOR 11
-#define FW_REVISION 1
+#define FW_MINOR 13
+#define FW_REVISION 0
 //#define FW_FLAVOR RC      //uncomment if DEBUG, DEVEL, ALPHA, BETA or RC
 //#define FW_FLAVERSION 1     //uncomment if FW_FLAVOR is defined and versioning is needed.
 #ifndef FW_FLAVOR
diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index 9975310f3..504c0c727 100644
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -787,7 +787,7 @@ int uart_putchar(char c, FILE *)
 void lcd_splash()
 {
 	lcd_clear(); // clears display and homes screen
-	lcd_puts_P(PSTR("\n Original Prusa i3\n   Prusa Research"));
+	lcd_printf_P(PSTR("\n Original Prusa i3\n   Prusa Research\n%20.20S"), PSTR(FW_VERSION));
 }
 
 
@@ -4313,11 +4313,11 @@ void process_commands()
 #endif //PRUSA_SN_SUPPORT
     else if(code_seen_P(PSTR("Fir"))){ // PRUSA Fir
 
-      SERIAL_PROTOCOLLN(FW_VERSION_FULL);
+      SERIAL_PROTOCOLLNPGM(FW_VERSION_FULL);
 
     } else if(code_seen_P(PSTR("Rev"))){ // PRUSA Rev
 
-      SERIAL_PROTOCOLLN(FILAMENT_SIZE "-" ELECTRONICS "-" NOZZLE_TYPE );
+      SERIAL_PROTOCOLLNPGM(FILAMENT_SIZE "-" ELECTRONICS "-" NOZZLE_TYPE );
 
     } else if(code_seen_P(PSTR("Lang"))) { // PRUSA Lang
 	  lang_reset();
diff --git a/Firmware/cmdqueue.cpp b/Firmware/cmdqueue.cpp
index 4a3ef048c..ab9aca7bc 100755
--- a/Firmware/cmdqueue.cpp
+++ b/Firmware/cmdqueue.cpp
@@ -27,10 +27,7 @@ bool comment_mode = false;
 char *strchr_pointer; // just a pointer to find chars in the command string like X, Y, Z, E, etc
 
 ShortTimer serialTimeoutTimer;
-
-long gcode_N = 0;
 long gcode_LastN = 0;
-
 uint32_t sdpos_atomic = 0;
 
 
@@ -372,7 +369,7 @@ void get_command()
       cmdbuffer[bufindw+serial_count+CMDHDRSIZE] = 0; //terminate string
       if(!comment_mode){
 		  
-		  gcode_N = 0;
+		  long gcode_N = -1;
 
 		  // Line numbers must be first in buffer
 
@@ -459,7 +456,7 @@ void get_command()
         // Command is complete: store the current line into buffer, move to the next line.
 
 		// Store type of entry
-        cmdbuffer[bufindw] = gcode_N ? CMDBUFFER_CURRENT_TYPE_USB_WITH_LINENR : CMDBUFFER_CURRENT_TYPE_USB;
+        cmdbuffer[bufindw] = gcode_N >= 0 ? CMDBUFFER_CURRENT_TYPE_USB_WITH_LINENR : CMDBUFFER_CURRENT_TYPE_USB;
 
 #ifdef CMDBUFFER_DEBUG
         SERIAL_ECHO_START;
@@ -475,7 +472,8 @@ void get_command()
         ++ buflen;
 
         // Update the processed gcode line
-        gcode_LastN = gcode_N;
+        if (gcode_N >= 0)
+            gcode_LastN = gcode_N;
 
 #ifdef CMDBUFFER_DEBUG
         SERIAL_ECHOPGM("Number of commands in the buffer: ");
diff --git a/Firmware/cmdqueue.h b/Firmware/cmdqueue.h
index 5229b96b0..3573d5020 100644
--- a/Firmware/cmdqueue.h
+++ b/Firmware/cmdqueue.h
@@ -52,7 +52,6 @@ extern int serial_count;
 extern bool comment_mode;
 extern char *strchr_pointer;
 
-extern long gcode_N;
 extern long gcode_LastN;
 
 extern bool cmdqueue_pop_front();
diff --git a/Firmware/ultralcd.cpp b/Firmware/ultralcd.cpp
old mode 100755
new mode 100644
index 12342bf98..fb5a1a91a
--- a/Firmware/ultralcd.cpp
+++ b/Firmware/ultralcd.cpp
@@ -82,7 +82,7 @@ static float manual_feedrate[] = MANUAL_FEEDRATE;
 /* LCD message status */
 static LongTimer lcd_status_message_timeout;
 static uint8_t lcd_status_message_level;
-static char lcd_status_message[LCD_WIDTH + 1] = WELCOME_MSG;
+static char lcd_status_message[LCD_WIDTH + 1];
 
 /* !Configuration settings */
 
@@ -679,11 +679,6 @@ void lcdui_print_status_line(void) {
             break;
         }
     }
-
-    // Fill the rest of line to have nice and clean output
-    for (uint8_t fillspace = 0; fillspace < LCD_WIDTH; fillspace++)
-        if ((lcd_status_message[fillspace] <= 31))
-            lcd_print(' ');
 }
 
 //! @brief Show Status Screen
@@ -7502,6 +7497,9 @@ void ultralcd_init()
   lcd_oldcardstatus = IS_SD_INSERTED;
 #endif//(SDCARDDETECT > 0)
   lcd_encoder_diff = 0;
+
+  // Initialise status line
+  lcd_setstatuspgm(MSG_WELCOME);
 }
 
 void lcd_ignore_click(bool b)
diff --git a/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h b/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
index ea498e101..92f129c0a 100644
--- a/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
@@ -422,7 +422,7 @@
 #define TEMP_MODEL_C_thr 0.01 // C estimation iteration threshold
 #define TEMP_MODEL_C_itr 30   // C estimation iteration limit
 
-#define TEMP_MODEL_R 29.7     // initial guess for heatblock resistance (K/W)
+#define TEMP_MODEL_R 20.5     // initial guess for heatblock resistance (K/W)
 #define TEMP_MODEL_Rl 5       // R estimation lower limit
 #define TEMP_MODEL_Rh 50      // R estimation upper limit
 #define TEMP_MODEL_R_thr 0.01 // R estimation iteration threshold
diff --git a/Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h b/Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h
index 942151040..2eb94d88b 100644
--- a/Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h
@@ -426,7 +426,7 @@
 #define TEMP_MODEL_C_thr 0.01 // C estimation iteration threshold
 #define TEMP_MODEL_C_itr 30   // C estimation iteration limit
 
-#define TEMP_MODEL_R 29.7     // initial guess for heatblock resistance (K/W)
+#define TEMP_MODEL_R 20.5     // initial guess for heatblock resistance (K/W)
 #define TEMP_MODEL_Rl 5       // R estimation lower limit
 #define TEMP_MODEL_Rh 50      // R estimation upper limit
 #define TEMP_MODEL_R_thr 0.01 // R estimation iteration threshold