I did mine last year, I went with the wider inner bearing sold by the vendors. But I used a small torque wrench and put 100 ft lbs on the nut, marked the nut and upright. Then I used a large torque wrench and put 400 ft lbs on the nut. I went up in steps and made corresponding marks on the upright to gauge the amount of movement for each progression. I am glad I did this because when I did the left hand thread the torque wrench I was using would not "click" in the counter clockwise direction. So I just applied the same amount of turn to get the torque I needed.
Jeff
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