Multiple google calendars on Priv?

My BlackBerry Calendar syncs with my google account. It would only show calendars from my Z30: events, birthdays, holidays, etc. It would not sync with any of the newly subscribed calendars e.g. WorldMate (replacing BlackBerry Travel). I finally got everything to sync by creating a new google calendar using BlackBerry CalDAV Account. Now, I have duplicated entries in the birthdays, holidays, etc. Any ideas on how to fix this would be much apprciated.

I had to turn off multiple calendars from the Accounts menu in Calendar. I did this by touching the coloured circle beside each calendar in the list.