Setting up custom servo mixes in iNav (or Cleanflight/Betaflight) for V Tail - YouTube
NURK's Betaflight 4.1 RPM Filtering PIDs and Setup for Freestyle – Paul Nurkkala
Motor Mixing Table Setup | AutoQuad
Multi-rotor Motor Mixing and why it's important- This post explains how to build a custom motor mix for your multi-rotor in Baseflight and Cleanflight and why every serious pilot should do so. :
Cleanflight custom mixing for Reptile 500 frame | QuadMeUp