I am trying to install mirror extenders on my 2012 suzuki v-strom dl650. I twisted off the mirror but cannot loosens the top dome nut that appears to lock against the lower nut. I assume that these are both right handed (tighten clockwise) threads? I tried to hold the bottom nut with one wrench and turn the top dome nut counter-clockwise to loosen it. Is that right? I tried heat and WD40 but still it won't budge.
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