I'm still working on last week's and it's doing my head in. I've got the words at the top and bottom, and the seven-letters to go underneath the grid, but I'm baffled by 26a and 22d. I suspect MEDAL becomes METAL by substitution, but MAL, MEL, MIL, MOL, MUL, MYL... none seems to work.Maybe if someone could give me a broad hint as to the two clues I'd be able to work out what goes in the centre square as well. C'mon Ginge, make me go DOH as well!