I'm not exactly sure how everyone has decided that Klingons view qajunpaQ as necessarily positive. We're told it fairly clearly about butlh in TKW. But for qajunpaQ it seems to me to be pretty much an exact correspondence to the idiomatic sense of nerve, neutral without context. The only special connotation we're told about qajunpaQ is that it implies a surprising or reckless kind of courage that the neutral toDuj does not.