问：最近改变了后冲击，现在一侧坐得比另一侧低，刘海越过速度颠簸

With a typical spring compressor, it would be difficult to over compress the spring to the point of damaging it so that seems unlikely. Nevertheless, if no other cause is found, you may have to measure the free height of the spring and possibly test the spring. Be sure the spring is properly positioned on the spring seat of course. The only way to damage the axle beam is to improperly jack the car. If any bushing mounted suspension components were removed during the work, if such are not tightened with the full vehicle weight on the wheels, there might be some effect on height from that. What you should do is first see if the height of either side is outside the factory service manual specification. If one side is out but the other isn’t, concentrate your diagnostic efforts on the side that is out. If you want these steps performed by a certified Mechanic, dispatched by万博体育入口到您的位置，请要求车辆倾斜诊断响应认证的机械师将为您解决这一问题。如果您有其他疑问或疑虑，请随时重新接触万博体育入口as we are always here to help you.