diff --git a/ArduCopter/Parameters.h b/ArduCopter/Parameters.h
index a3e01fd292..a7fd6b5c0c 100644
--- a/ArduCopter/Parameters.h
+++ b/ArduCopter/Parameters.h
@@ -362,11 +362,11 @@ public:
 	heli_servo3_pos			(180,						k_param_heli_servo3_pos,				PSTR("SV3_POS_")),
 	heli_roll_max			(4500,						k_param_heli_roll_max,					PSTR("ROL_MAX_")),
 	heli_pitch_max			(4500,						k_param_heli_pitch_max,					PSTR("PIT_MAX_")),
-	heli_coll_min			(1000,						k_param_heli_collective_min,			PSTR("COL_MIN_")),
-	heli_coll_max			(2000,						k_param_heli_collective_max,			PSTR("COL_MAX_")),
+	heli_coll_min			(1250,						k_param_heli_collective_min,			PSTR("COL_MIN_")),
+	heli_coll_max			(1750,						k_param_heli_collective_max,			PSTR("COL_MAX_")),
 	heli_coll_mid			(1500,						k_param_heli_collective_mid,			PSTR("COL_MID_")),
 	heli_ext_gyro_enabled	(0,							k_param_heli_ext_gyro_enabled,			PSTR("GYR_ENABLE_")),
-	heli_ext_gyro_gain		(1000,						k_param_heli_ext_gyro_gain,				PSTR("GYR_GAIN_")),
+	heli_ext_gyro_gain		(1350,						k_param_heli_ext_gyro_gain,				PSTR("GYR_GAIN_")),
 	heli_servo_averaging	(0,							k_param_heli_servo_averaging,			PSTR("SV_AVG")),
 	heli_servo_manual		(0,							k_param_heli_servo_manual,				PSTR("HSV_MAN")),
 	heli_phase_angle		(0,							k_param_heli_phase_angle,				PSTR("H_PHANG")),