I managed to rip off part of the shark fin antenna housing on my 2013 LR4 in a parking garage. GPS and radio still work and I temporarily patched it with duct tape. I got a quote to replace it, but I'm loath to pull down the headliner to do the fix. Are there any alternatives that would involve sealing the hole? I don't care about the looks but want it to be weather-tight. Thanks.