Before (if?) I begin on the endgame, can I get a few parses to put my weary mind at rest, I have the answers to them all but the wordplay eludes me ...
7a - Mineral of certain type, sort of any iodine (5)
I can see the definition and know where the escaped letter goes but not the rest.
34a - Dacosta, say, lacks European skill levels (3)
Again, I get the definition and know the escaped letter but can't find either the adjusted first word nor how it relates to the answer if I add back E(uropean).
28a - A hint of adult troubles is hairy palms (4)
By process of elimination I have this as one of the seven and have the answer from the definition and because all the letters are cross-checked but I just cannot see the wordplay.