First Flys. RC sounds stranger

I worked the last weeks in this quadcopter

SIBU project:

  • Frame X, Daya 550.
  • PIXHAWK 2.4.8
  • 4 MOTORS GARTT ML3508S 700KV
  • 4 ESC ZTW 30A SPIDER 2-6 LIPO 600HZ (oneshop configuration)
  • PROPELLER 12.5 (DJI INSPIRE 1)
  • 3DR POWER MODULE 5.3V
  • Battery 4s 10000mh 14.8v.
  • FrSky FLVSS LiPo Voltage Sensor
  • RC TARANIS Q X7
  • Receptor X8R with Telemetry cable (by Craft and Theory)
  • Ardupilot 3.5.7
    -Telemetric HOLYBRO 915 MHz

SOFTWARE
-Mission Planner 13.58 on Win10
-APM: Copter V3.5.7 on PIXHAWK 2.4.8
-FlightDeckQ for ArduPilot v 3.3.0 on TARANIS Q X7
Please see this video of some firt fly:

I make all the calibration like the suport page. And have some problems in the firt fly:
RC sounds stranger. What those sounds mean?
I am newbie in the stabilized mode. And take off to front as vertical fly.
Is very dificult take control of the throttle, the drone go to left, if try to take control with the pitch and roll the drone go up or down.

Please get me some help.

> I resolved this issues only with adjust the battery well and aligned one motor. Watch the video.The SIBU Drone was left flying in this way after the arrangements . Any more suggestions?

Today I went and used the Auto Tune mode, with good news.
This picture is the pre- extending tuning data:


And the picture afert the Auto Tune:

All worked very good.