Must say to be honest I don't follow the discussion on this little point: on p. 1224 of my Chambers (11th Ed.) it says "predominANTly" quite clearly,and gives "predominATE" as verb & as rare variant of the other one as adjective, but not as adverb! not that I care two hoots,frankly, but maybe there's been some slight misunderstanding...
More important: I loved the puzzle, found it much easier this vtime tho' bigger than the last one, and even my not-quite-so-certain ones I'm now sure of. Congratulations to all, and especially to Les once again on getting us all together so brilliantly: there's nothing quite like a JE !!!