Install upper horizontal. Remove the bolts, insert the top bar with long side to the left, reinsert bolts, both from the outside of the rack, in towards the vehicle. Install nuts and washers. Tighten. Snug, do not overtighten.
Baskets lean to the right. Drop bolts down from the top(no washers), hold with 9/16" wrench on top, install nut and washer on the bottom. DO NOT OVERTIGHTEN THESE! Doing so will result in the purchase of a new upper horizontal tube. These seriously only need to be snug, they wont come loose.