Well, Jeri is correct; the a in the triplet should have been an A. I am not offended. But on my machine, anyway, 1/2g works as an 1/8th note. I've not tried g/2, so I don't know if the effect is the same. I may have made additional errors, but I don't think so. Unless I misapprehend McColl's approach to folk songs (another possibility) he would not have thought it unreasonable to make small changes in the tune.