Hi, does anyone have the BD X4s? I've just bought the purple and silver size and am shocked by the stiffness of the springs. I tried them in a shop a while ago, but don't remember it being so bad. Compared to the the size 0 dragon I can't retract the 0.4 cam anywhere near as much. Even with both hands I can't pull the trigger all the way to the point it would be totally over cammed. Is this normal for the X4s?