Hi there. I replaced my arrma transmitter and receiver with a spektrum combo and also installed a hitec servo. I am now having an issue that I'm not sure what the problem is. My reverse and brake occasionally do not work. I turn it on and they both work but then after a few seconds it stops. Even after waiting 10 seconds it still won't go in reverse. I checked the esc setting and it is set for brake and reverse. I've tried rebinding the receiver. I'm quite perplexed what the problem is. It makes a clicking noise when it doesn't reverse and then if I go forward and then try reverse it works.