If you install the upper drag strut with the head down, it will hit the lower drag strut during retraction.
AA. 如果上部拉力杆安装时头部向上，那么下部阻力杆在收缩时就会碰撞上部拉力杆。
BB. 如果上部活塞杆收缩时头部向下，那么下部阻力杆安装时就会碰撞上部拉力杆。
CC. 如果上部阻力杆安装时头部向下，那么在收缩时就会碰撞下部阻力杆。
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If you install the upper drag strut with the head down, it will hit the lower drag strut during ret
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If you install the upper drag strut incorrectly, it will hit the lower drag strut during retraction
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