I have tried to build my own quad. Was using qbrain 4 in 1 esc but changed to 30A afro esc. I calibrated the esc’s 1 by 1 and had the full throttle range. Im using a HK Megapilot 2.7 and have to calibrate everytime I turn the quad on. If I dont calibrate, the throttle is about 1/4 through the entire throttle range from low to full. I have right stick control i.e., elevator and aileron, but when I calibrate I have no control over elevator, aileron and rudder sticks.