I'm curious as well. I've had the rack replaced twice for the clicking noise. The noise is gone now, but the front end is starting to feel a little twitchy at highway speeds almost like what you're describing. Steering is tight, which is nice, but a bit twitchy. It's easy for the car to veer off if I'm not paying enough attention to keeping the steering wheel centered. Feels like I'm driving like a drunk or something, so I pretty much don't have much confidence.
Anyhow, I'm starting to hear a click noise on my left front wheel. Even a clunk as I back out of the driveway. It happens when I first get the car moving.
Are you experiencing any of these noises? My car is getting serviced on Monday, which already involves removing the front wheels to rotate the tires. So I'm going to have my tech look at it.
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