13a is one of the tenuous ones, in my opinion. Definition is the last 2 words. Wordplay is a loose synonym plus an abreviation.
3d Another dodgy one. Definition is the last 4 words. Wordplay is one word removed from another. It's easiest to think what the first 3 letters might be.
34d I assume it's another one where a word is removed but I couldn't be bothered with it.
34a Assuming you have identified the excess word and definition, the wordplay is a common synonym plus an uncommon one.
41a This one defeated me too.
Too many tenuous clues and synonyms in this puzzle for my liking.