Been seeing this for a while but only with some wheels (all the large wheels seem to do it). In that if your tech tilts backwards/forwards far enough the wheels operate in resverse. Using included snapshot position the tech so that the GC Buzzsaws are on the ground with the rest of the tech elevated off the ground (you'll need to be on a slope. (Drive forward down the slope then go into reverse tech should tilt up). Try to drive forward. Bug? Angle appears to be around 45° form horizontal. But doesn't always appear to happen when all the wheels are on the ground.