Index: firmware/App/Controllers/Heaters.c
===================================================================
diff -u -r3d131237935eb36e56e0d057a713430e31dc6405 -ra2c32d4d221603054ca9ad7a097112caebf08c4e
--- firmware/App/Controllers/Heaters.c	(.../Heaters.c)	(revision 3d131237935eb36e56e0d057a713430e31dc6405)
+++ firmware/App/Controllers/Heaters.c	(.../Heaters.c)	(revision a2c32d4d221603054ca9ad7a097112caebf08c4e)
@@ -54,8 +54,7 @@
 #define PRIMARY_HEATER_INITIAL_DUTY_CYCLE_ESTIMATE_DIVISOR         2.0                                                     ///< Primary heaters initial duty cycle estimation divisor.
 #define MAIN_AND_SMALL_PRIMARY_HEATER_DUTY_CYCLE_DIVISOR           2.0                                                     ///< Main and small primary heater duty cycle divisor
 
-
-#define PRIMARY_HEATERS_P_COEFFICIENT                              0.02                                                    ///< Primary heaters proportional coefficient.
+#define PRIMARY_HEATERS_P_COEFFICIENT                              0.15                                                    ///< Primary heaters proportional coefficient.
 #define PRIMARY_HEATERS_I_COEFFICIENT                              0.001                                                   ///< Primary heaters integral coefficient.
 
 #define TRIMMER_HEATER_P_COEFFICIENT                               0.02                                                    ///< Trimmer heater proportional coefficient.