I’m also finding this one hard going. Some very devious parsing, not to mention some very dubious letter-counts (particularly 42a and 28d, which I think should be 3-3 and 6,4-4 respectively).
I have just one to get: 54a. Changing latest film in our name (2,3,4). The letters I have are O - / T - E / - U - N. It looks like ON THE TURN, but can anyone explain it please?