I am curious as to whether anyone one here has stacked 2 racks. Am image of what I'm talking about!! Curious as to possible weight issues. I would be handing all of my cymbals off of this "upper" rack and possible (eventually) some octobans along with my shallow 8,10 and 12. Mine won't be as high as his, but you get the idea. This is a Gibraltar Road Series Rack btw. I am assuming some tube extension clamps. Like I said, wondering about the phusical wieght.