Where are the other steps? Thanks

I am in the middle of trying to assemble one of these. The instructions that they sent me are not very clear. There are no details on what size holes need to be drilled, if the cross bars get two holes and two bolts or one and some of the parts are different. And that’s as far as I’ve gotten. You would think $8000 equipment would come with a better manual. Just know that if you buy one of these you are going to have to figure it out yourself.

Do you know what pulling force is required?