i have a radiolink at9s pro, been working great until i added a second plane with new receiver. i fly electric 3D so i really need my throttle. my motor wont start until im at half sick on the radio. was not like this before adding 2nd plane. no both my planes need half stick movement to engage motor. ive checked all the settings, end points, trim,throttl curve,dual rates,throttle cut,expo rates, im totally lost. cant say much for customer service, please help. thanks. also, now one of my e.s.c makes different tone noise but still works at half stick.

Calibrate the ESC

thanks, i just played with different tones and stick positions when turning on radio. finally stumbled upon correct one.