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Few things can be as frustrating as a failed thread repair. Whether it's a spark plug hole or head bolt threads in a cylinder head, a botched fix can lead to larger issues immediately or down the road. At WiseAutoTools.com, we've noticed a concerning trend in recently: an increase in failed repairs due to China knock-off or copycat thread repair kits flooding the market.As a trusted provider of automotive tools and solutions since 2005, we've seen firsthand the consequences of using subpar threa …