Probably safest to tread thou in my footssteps, good David Carter - just search for the two possible source tunes, and and look at the dates. Ignore all the recent noise, that's not what I'm looking at at all, we have that tied down to a T, with the exception of the odd slur.
Funnily enough, I tipped my cap to the Wesleys' bones as recently as Thursday, on the way to the dentists. I now have some very odd slurs all of me very own. My interest is because I'm on a Choir Director's course (get him!) and I want to have an argued case for taking the arrangement Bob Chilcott and his mate Peter Hunt did for beginner choirs back to Roots.