Adept is the antonym of inept, and "ept" is a back-formation of inept.
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As for me, I'm more than a little adept at wrenching old-school NR/SR stuff - except wheelbuilding. Frankly, I'm just too lazy to give that a go. That said, mechanical aptitude is a strength, and learning to wrench on modern stuff would most likely be successful as I like to tinker, and seem to have an innate sense of how mechanical things go together.
DD