2000 Neon - Hard to turn wheel to Left

I just bought this used 2000 neon, it has a few problems. When I first drove it, I thought the power steering was out or the fluid was low. It has plenty of fluid, and the belt is fine. Then I realized the power steering was working when I turned to the right, but not when I turn left. It's relitively hard to turn left and also makes a noise like it's low on fluid. When I turn right it's almost loose feeling, it's too easy in comparison. It doesn't pull in either direction, and I just had an alignment and 4 new tires put on. I also had the steering "tested" at sears auto, they said it checked out fine. It's becoming very annoying to drive with this crazy steering, what is going on?