roof rack cross rails

I found a rack on Amazon.com manufactured by a company called Curt. It's noting flashy but it looks great for what all I need it to do. The bars are locking and I do have the key so no worries there! If anyone is interested I'm up for selling and if anyone has any input on the Curt rack let me...

I am seeking help with an apparently straightforward issue that nonetheless bugs me. I have bought the following OEM roof rack cross rails for my 2008 H3: http://www.autotrucktoys.com/hummer/OEM-Hummer-H3-Roof-Rack-Crossbars-PRD24395.aspx The problem is that the side rail groove under the...