I have a couple of the ecx 1/24 scale models that I bought used. One is fine, but I'm having loads of problems with the other one. When I bind it, the steering works but the throttle dosn't. I purchased a new one but had the same problem. I tried switching the transmitter, battery, and other rec/esc with the other model but still got the same results. I finally returned, received and tested a replacement three times before (& while) talking with the Horizon help line to no avail. It seems unlikely that three units in a row would do this. Has anyone else had this problem and does anyone have any ideas???