I just ordered the DCAEK for my FS 9mm. I know if I install the entire kit I should expect a trigger pull of ~5.5lbs. Can anyone give me an idea of what kind of pull I will get if I install everything except the trigger return spring? What if I install it all with just the factory springs? I am trying to decide which combination I should start with. I am wanting a pull in the 4.5lbs-5lbs range.