Hi,
This FAQ will try and help show ow to assemble the Skybox/Showcase crossbar mounting hardware in case it gets disassembled:
Here is a list of part names with the color of the arrow that points at them in the photo below:
Blue Arrow: Plastic Cam
Purple Arrow: Tension bolt and thumb wheel
Green Arrow: Track thumb wheel
Orange Arrow: Large barrel nut (no threads)
Yellow Arrow: Small barrel nut
Red Arrow: Cam Bearing Hardware
Here is a picture showing all the parts used in the mounting hardware:
Here is a different picture showing all the parts assembled (not all parts visible):
Here is a picture of the top of the unit, showing:
Purple Tension bolt and thumb wheel
Orange Large Barrel nut
Blue Cam mechanism
and Red Cam Bearing Hardware
The purple tension rod goes through the hole in the red cam bearing hardware, connecting into the yellow short barrel nut in the claw mechanism
And a picture of the yellow short barrel nut the purple tension rod threads into:
And lastly the track tightening wheel:
And here is a link to the current instructions:
http://assets.yakima.com/Product/instructions/8007335/1
If we can help or improve these instructions in any way, please let us know how.