What I read here is to keep them greased. I'll save the link. If I had been equipped with this information, I would have chosen different grease than I did.How much of a hurry are you in?
What size is you torque wrench?
You want a socket to fit a standard steering nut?
Related;
I found a bearing maker that stated most "brinelling" isn't, it's a wear pattern from vibration causing the to oscillate against each other, the races pay the price (false brinelling.
That matters cuz well you ain't going to eliminate vibration from your 360 vertical twin.
https://www.malloywind.com/articles/false-brinelling
BTW, in recent weeks I replace steering head bearings on a ZG1000 Connie. They were severely brinelled tapered roller bearings.