I have recently finished a quad build, but once I arm the quad and apply throttle the motors don't spin until i give full throttle and the escs begin to beep. There is no control over the motors and as far as I can tell everything is wired correctly. I have manually calibrated the esc using the receiver, so I am pretty sure that the problem isn't the esc, but KissFC. Any help would be very much appreciated thank you!!