throttle settings

I'm thinking about building a 6s freestyle kwad with 2150kv motors, so that I can have a 4S battery setup with dual blades for long range and efficiency, and 6S batteries for freestyle (with throttle scaling in BF 4.1 of course). However, I have read on multiple websites and forums that scaling...

I need help do calibrate my throttle stick for uplift and downfall, i think the motors are too fast before middle position in my RC SkyFly FS-I6. Help please, this the final step for my drone building.

Using Flysky's AFHDS 2A protocol with older Flysky FS-i6 and new Flysky X6B i-Bus, PPM, PWM receiver set up for PPM. Receiver bound. The receiver controls are operational under Betaflight 3.0.1. Escs are calibrated. Channel 5 is mapped to AUX 1 for arming. Under Betaflight, I can see switching...