Cant Bind DX3S to my e-revo(MMM)

[tim186]

I have made some changes to the end point on my TX which requires me to bind the TX to the RX again. But i have tried to do it and the amber light on the RX goes from flashing to constant, i get two beeps from the MMM and the leds go from amber/red to a flashing green. i can turn the steering but it i have no throttle. i have taken the bind plug out as well after binding the two together.

I had this problem when i first set it up and got it to work before but i forgot how i did it. what am i missing?