I've recently got a Westfield megablade with an 893cc carbed fireblade engine, where is the best place for all of the vacuum breathers to go?

The head breather goes to a catch tank but there are 3 breathers on the carbs which go to atmosphere, should they go to the airbox - in this case the ali base of a PX600 filter?

Mine I just bent upside down to face upwards and round the side of the carb and worked fine.
Produced a nice clean curve on rollers