hi im new to rving.im looking at a 1984 class c chevy rockwood.my question is if the fiberglass that goes from the van front end to the rv body has cracks in it is it structural or cosmetic?the cracks are about 4ft or chest level high and are 6 to 7inches long.the owner told me that this is common in older class c motorhomes and nothing to worry about.is this true?