Prospect made a bit of a mess this month, I usually photocopy the crossword from the magazine, this month the grid was wrong, the download version is quite different, with no explanation. I am stuck on
29A An unexpected sequel, once (5-4) A?T?? ?L?P
1D Drawings of the elevation of buildings O?T?O?R?P?S
26D Trifling, dried berries P?O?E?C?R?S
28D Show deference ?H?I?E?A?E
30D 28 Down's behaviour, maybe ??V?R?N?E
Help much appreciated