Deflection using simulation on extrusion

I have some know information about my extrusion piece. It has a mounting arm attached at the top and when the arm swings we have almost an inch of deflection "real world". I wanted to apply this within solidworks simulation, when I do It gives me a deflection of over 3". I try to adjust the amount of force and it still results with the same deflection. What am I doing wrong?

SolidworksSimulation