I just got the RTR vesion today, btw the Flysky GT3B radio binds to the stock receiver. Also, I have some thin 12mm hex adapters from some RPM wide Revolver 2.2 wheels that if turned around fit the axles with room for the pin to slide in. Two mods have to done. 1) either find thinner axle pins or cut the Durango down to the width of the hex adater. 2) snip a little bit of the end of the hex apadter on the edges where the pin nests to slide in the pin like the stock Durango hex adapter.