Did you chill the bottles down after they were carbed? I've always read that wheat beers don't like to be aged for too long, but mine disappeared long before that would have been an issue, so I can't speak to the accuracy.
As for the flavour, are you sure 'pungent' is the right term? Pungent means strong and sharp. It is more bitter? Where is it in the taste, in the initial flavour or in the aftertaste?