Ya I flashed the matching gapps right after. Didn't do a data wipe before it all though. I guess I'll do it when I get home from work. Wonder why calendar is such an issue. Oh well, I'll let you guys know. This will be my process. wipe data/cache reflash nightly then flash gapps. No reboot between. We'll see.
No, not just gapps. GApps Fixer. Fixed calendar sync for me. Hope you haven't wiped yet.