If its a sway more than a wobble I could be the steering dampener. I use an rtc dampener with success. For some reason it's much to the disgust of many though to use an rtc dampener.
Not sure where you are but if desired a decent front end alignment place who specialise in this thing. There's a mob called Pro Axle that I used and they were spot on with my Patrol. Cost a whole 80 bux too.
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