Well I just test a new time and I have 7 servos working. The servos that dont work are on the PWM 2, 6, 11, 12 and 13. At the Oscilloscope we can see the signal increase or reduce, idk if it comes from the servos or the arduino.
They are powered with a laboratory power supply 11,1V 1A. To reduce the voltage I put before each servo a resistors at 68 Ohms so the voltage for the servos are 4,8V. Next to that the PWM are linked on the servo and the Arduino is powered by the laboratory power supply.
For the array I didnt know what is that, I google the thing just to see, I never use the before.