Soldato
That's because it isn't really their problem. It isn't a new build in the true sense of the word and so the usual contract provisions regarding snagging etc are unlikely to be relevant. If you haven't specified exactly what works needed doing before exchange and completion (sounds like its just been mentioned as "snagging" works?) I don't see what else you can expect.the fact my conveyancer seems unbothered.
My advice would be don't waste your conveyancer or their firm's time making a pointless complaint that will take away from time they can spend sorting other people's moves out.