With more than about 6" of lift, crossover steering makes a big difference.
You need to explain more about your steering problems, and you need to have someone cycle the steering wheel between the 9 and 3 o'clock positions (with the engine running so that the power steering is active) while you inspect each one of the front end components for looseness or flexing.
Even though they are of a jeep, the front end is similar. Watch these two YouTube videos for reference:
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