Hello everyone! I'm new here and am hoping you guys can help me out! I've been flying electric heli's for 2 years now, but always the RTF stuff that always lacks in one way or another. I finally decided to do things right, and am building a T-Rex 450 Airwolf. (Well, a knock off T-Rex, as most of the stuff was to be replaced anyway.)
So, I bought an el-cheapo Titan 450 V2 that came 80% RTF. I flew it a couple times before my new gear came, and it was.....well....marginally ok. My plan was to replace the radio gear and gyro, but leave the servos, ESC, and motor. (for now). I am a complete noob when it comes to actually programming radio gear, and after a days work I finally got the servo horns leveled, the swash plate set up and the radio working right......except, I have no throttle! Upon powering up, all the servos work as they should but the ESC/motor just make beeping sounds. Its not fried, cause when I hook up the old radio gear it works fine.
I've looked at the throttle cut-off settings, made sure the servos were plugged into the right channels, etc. No joy. Any idea what Im doing wrong and how to fix it?

Futaba radios need the throttle channel reversed to arm just about every ESC I know of.