Ever since I replaced my Droid RAZR with the Droid Ultra my google calendar events will not sync with my Nexus 10. I've web chatted with Motorola where they walked me through a Wipe Cache Partition, have consulted with two Verizon store techs, have downloaded a couple of calendar sync apps from the Google play store but nothing is working. All calendar events made from my RAZR are still on both calendars. If I go to the calendar on my Ultra, tap the menu, select Calendars to Display, tap Calendars to sync, I get a list with everything checked except Device Calendar which states "non-syncable." Any ideas on how to make these two devices work like they did when I had the RAZR? Thanks much.