Steering problems

When I make left turns the wheel catches a few degrees off center and requires a bit of force to break it free. Once free its moves perfectly fine. It doesn't catch on the way back to the center or at all when turning to the right. There is some sort of a straining sound when turning to the right but I don't believe it's the pump. Fluids are good and the pump seems strong. All other steering is perfect. Also the steering issues seem to lessen the longer I drive the vehicle. After the car warms up and has been on the road for a bit the wheel no longer seems to bind up. If it does it's very slight.