The engine bolts on my 2000 are completely rusted, and it is starting to spread to some of the braces as well. Is this common? The car has been well taken care of, but it has been that way since I bought it in 2004. It does not affect performance at all. (I've already replaced my ground cables and bolts that attach them.) But when I see pictures of other Insight engines they appear so much better. No big deal, but I'm just particular about my cars.