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Originally Posted by The WidowMaker
i still dont understand exactally why some show up and some dont. i found out during my build that the lower portion of my quarters had rivets holding them on. nothing else.... there were no issues with hairline cracks visible at any point in time.
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It's not the movement, it's the hardened mig weld vs the normal sheet metal. It'll expands differently with heat. And it's worse at a place like the top of the b pillar, where sun would hit in directly.