Anet A8 Servo Z-Endstop Remix

The Z probe is mounted between the radiator and the extruder fan. I made this remis because of the original one doesnt let me use any other fan duct only the original anet a8..
The microswitch, ground and + 5V supply are taken from the Z_MIN connector.
The control signal of the servo taken from SERVO0_PIN 27, it can be found on the LCD pin 3 connector.
My firmware settings (Marlin 1.1.x):

#define Z_MIN_ENDSTOP_INVERTING true

#define Z_ENDSTOP_SERVO_NR 0
#define Z_SERVO_ANGLES {127,5}