hi everybody,im new to rv s and have a few questions that hopefully someone can answer.im looking at a 1984 class c chevy rockwood.im using it to camp at motorcycle races so it doesnt need to be beautiful just functional.my question is regarding some cracks in the fiberglass.there are cracks in the fiberglass at the front where it gets wide from the van front to the rv body.the owner told me that they are stress cracks and that a lot of older motorhomes get them.is this tue and are these cracks structural and dangerous or cosmetic and just not pretty.