Hello, I have an assembly with 1 motor and a U-shaped bracket. By moving the bracket using the mouse, I can make it turns in a way that it looks like the motor were turning the bracket. However, after I imported this assembly as a component into a larger assembly which contains more motors and brackets, I can make it turns by moving the bracket using the mouse. Could anybody please help me? I recall that I had this problem before. After I did something, the problem was fixed. Don't remember how to do it anymore... Thanks.