Makes sense. I just finished putting my Tekin motor and ESC in (had them ordered from the first post of this thread. Haven't run them yet, cuz the cord that goes from the ESC to the receiver won't fit into my airtronics receiver. The plug has a small vertical rib on the outside of the plug, which prevents the plug from going into the receiver. It looks like it would fit if the rib were to be ground down. Have any of you ever heard of this. Sucks that I found this out at the very end, the very last plug I went to plug in, after everything was all soldered. What do you know about this?