andyp, I've tried to 29 the unclued entry, but all I get is gobble-de-gook. I must be doing, or have got something, wrong. I think my 7d may be wrong as I cannot see where its fourth letter comes from.
have you got the message from the letters from the missing words though and followed it - if you follow that through, the punctuation should become clearer.
I have a filled grid and I've found all the hidden instructions. However I can't interpret the "4 7 3 4" part. I'm inferring that each of the methods of applying the wordplay-only word is to be used once. Am I right so far?