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I always use WD-40 penetrate fluid to loosen up a bit before carrying out the torque. I was careful not to round the nuts or bolts. I don’t have an impact wrench and this is how I do it.Make sure you give the nut a good squirt with WD40 (or equivalent) a few times giving it 10-15 minutes between squirts before you try and loosen it again. Sometimes works.