Last month I had the front lower ball joints of my '93 Accord (210,000km ~ 130,000 miles) replaced. Since last week, the car has had a tendency to pull slightly to the right. It was not doing this before the ball joints were replaced. I was thinking perhaps I need a wheel alignment. But my current tires have only 10,000km (~ 6200 miles) on them, and all 4 wheels were aligned when I got the tires. I haven't closely checked the wear on my tires, but they are probably about due for a rotation. My question is: Is a 4-wheel (or even just a front-wheel) alignment recommended after replacing lower ball joints? Any other ideas? Somehow I don't think a simple tire rotation is enough. Thanks in advance.