Hi @Kyle_Hansen,
If you are still running into this issue, you can use zzBots, a third party app, to fully 2-Way Sync, or 1-Way Sync, between Asana and Google Calendar.
I previously have posted about this on another thread about the same issue, as quoted below:
I hope this provides the help, and the solution that you are looking for.
Disclaimer: I am affiliated with zzBots