Fix it
Roof bubbles should always be fixed. Probably water got in as well as air. I would remove the antenna, inject some silicone into the bubble through a tube, and squeeze the excess out. Then remount and seal the antenna. I'm not sure I'd trust a dealer to do that, but some dealers would probably fix it well. Just not your dealer who thinks it is o.k.
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2009 Roo 21ss + 2007 Superduty 6.0
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