Easiest way is to reverse the AILERON channel on your radio, that's assuming your UP is moving the tank forward and DOWN reverse of course! When setting up a new tank or going from 3:1 gears to 4:1 gears sometimes it takes a bit of figuring out whats going on, especially when you have gun recoil in the tracks... often you have to get out the soldering iron and flip the polarity on the motors directly. ALSO... the default setting on Clark boards is to allow static turns. I hate this feature mainly because for some reason... while at full speed the board will throw the inside track (which is dead slow or stopped during a turn) into FULL reverse. Ouch! Not good for the gearboxes. So I sacrifice neutral steering for more controllable tanks. Really that only affects Panthers and Tigers historically anyway