Hi, new to rc and have been building a kraton 6s exb. I have a spektrum dx5c using a 6100at rx that was sold as a combo deal. I had put it together yesterday, motor was reversed so I switch it in the controller. Got it working seemingly ok, but my brakes were screwed. It would just go full reverse the second you’d tap them. So brought back to mess with it. Now I have no reverse or forward just steering. I have reset everything to default and rebound the controller no change. It is beeping two short beeps and one long beep.flashing red, yellow, yellow, yellow… any help???