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Well, I guess I should finish what I've started w/ an update. I had contacted Infinity @ they responded quickly and apologetically. They are going to replace the sub (albeit a refurbished sub) for free, and that includes shipping the old one back to them. I've had the thing for 1.5 yrs. and that's great customer service in my opinion. I guess the screws could have been overtightened, but that would have been done during assembly as the screws in the closest proximity of the cracks aren't touched during normal installation I apologize if I offended anyone by posting this. Next time I will strictly adhere to the rules to avoid any conflict. Thanks for pointing me in the right direction. Regards!