There is some sort of material inside the sunroof cavity that is producting a tar like material that is destroying the inner roof slide (the part that the driver pulls forward and back). How hard is it to remove the sunroof and replace this seal or whatever it is that is making stains and scuff marks on the slide? Also I have noticed that whenever the car is driven, the side mirrors shake and rattle around with road bumps and wind? Is there any way to tighten them up in the housings? The housings themselvs actually seem loose and wiggle from time to time? Any DIY fix? Thanks in advance!