This is a difficult one, so I have a few more to get; any clues or hints would be appreciated.
19d Subject to chucking ball at hunks endlessly (5)
I have T?E?E.
I think it could be THEME, which can be the Subject of a talk, but I don't get the rest of the clue.
23d Pad out and measure regal bust (7).
I have only the first letter, E.
34a Row about Government leader's cat (5).
I have only the first letter T.
I think that will do for now, I will come back later if necessary.
Thanks in advance for any hints.