good car seat, stroller hard to handle

I love the car seat. The car seat is easy to install and remove from our vehicle (I have a 2001 Honda Civic, the car seat is a little big and we put it in the center seat of the back seat), but a little difficult to position in the stroller to lock it when baby is sleeping because it makes a snapping noise...but I still love it. The stroller is not that bad, but if baby gets upset in the stroller and you have to carry baby and push stroller, its really difficult. And I don't know if it is just mine, but the stroller is difficult to control. It doesn't want to move the direction you are pushing it sometimes because the wheels in the front get stuck in one position and you have to move the stroller back and to one side before you can try to continue moving it forward. And then it might still stick again. It doesn't move well in a crowd (we took it to the Monterey Bay Aquarium and I nearly went insane trying to move it around between the thousands of people it seemed were there that day), but otherwise it is really sturdy and there is a lot of room in the pouch underneath the stroller.