Removing non-oem nerf bars

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Ok, so I'm trying to remove the non-eom nerf bars. I've got the bars off, but am now working on the brackets. They are attached at the top to the bottom of the vehicle with one bolt each. Just wondering if that bolt should stay there after removing the brackets, or if the bolts go with the brackets? I don't have another h2 here to compare to so any help would be appreciated. Here are some pics of the location...

[dochummer]

Ok, so I'm trying to remove the non-eom nerf bars. I've got the bars off, but am now working on the brackets. They are attached at the top to the bottom of the vehicle with one bolt each. Just wondering if that bolt should stay there after removing the brackets, or if the bolts go with the brackets? I don't have another h2 here to compare to so any help would be appreciated. Here are some pics of the location...

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here's another of the rear bracket

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and another

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and lastly

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I just got the front bracket off, and there's a gasket there....does that need to stay?