Hi jdwright18,
I think that you had the most common problem when changing springs, you must not tighten your suspension (A arms) with the tires off the ground, because the bushings will act as a spring an carry all the wheight of the car, and this problem gets agraviated if you are using poly, you must tighten the A arms and bolts with the suspension loaded so the bushings wont act as a springs, and you will notice how the car wikk sit lower, also after a week or so of driving the springs will settle a little more.
Good Luck ...
Ales