Install upper horizontal. Insert the top bar with LONG SIDE ON THE LEFT, insert the remaining 3/8"x2.75 bolts, both from the outside of the rack, in towards the vehicle. Install nuts and washers. Tighten. Snug, do not overtighten. (PRO TIP: Insert bolts first, set tube on top, pull one bolt, align holes, insert bolt, then do the other one.)
Baskets lean to the right. Drop bolt with washer down through basket and tube, 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 only need to be snug, they wont come loose.