I recently reached the point in my Tamiya M51 build where I was supposed to test the electronics. Everything seemed straightforward but when I tested the tank, all of the controls seem to be reversed. When I push the stick forward, that tank run in reverse, when I turn right the tank goes left. I've checked the connections several times but I have no answer. Also, my manual says that my receiver should have a wire that goes to my antennae but there is no wire and seems that there never was. Lastly, where can I buy a battle system for my tank? Any help would be greatly appreciated.