Hi Laura
Not many of us wrestle with EV it seems!
As you say some clues have to be adjusted (shortened) to fit into the grid. The adjustment is at the point where the clue crosses with another.
As an example I'll start at 'home'.
4d is an anagram (less D) and the 4 letters which would have to be squeezed into the 5th cell must be removed. If you add those 4 letters to the 2 removed from the start of 18a it will give you one of the items in the Title.
Hope that is clear, otherwise come back.