experienced the dreaded 'rear diff leak' that many of the Sol owners are going through? I've been lurking on the Sol forum lately, and it seems that lots of Sols are in the shop right now either getting new seals or a new carrier. I haven't heard a peep out of any Sky owners regarding this issue...yet. Has GM resolved it on the Sky? Or is it something that, we too, will have to face down the road a bit?