Hey all new to this R/C stuff in general. I have a E-Maxx that I bought off a buddy who had modified it what I deem as big time. It has a dewalt 14.4v brush motor , a Mamba max pro esc. It was running fine but didn't have reverse. Ok so I got the website up found the diagram for the Mamba and changed it from high power mode to reversing mode. No big deal I seperated the wires hooked up the red and black wires and disabled the white. Get it all back together with two new 7 cell batteries and nothing. I have steering control but no forward or reverse. Any Ideas where to go from here? Thanks