Steering provision for SpaceStar 1.2

Hello everyone, recently we received our new SpaceStar, a nice car with low fuel consumption! After more than 300 km, however, one thing strikes me: The steering reserve power is very low, no matter whether to the right or left is steered. The steering wheel is only hesitantly straight again and remains suspended at 08:00/14:00 o’clock position. In order to be able to drive straight again, I have to actively steer back, otherwise it continues to drive a curve. the car. The straight run is also restless, the SpaceStar runs after every track groove. Probably this hangs on a (too) small tail angle. Is this steering behavior normal and wanted by the SpaceStar? Can the tail angle be adjusted?