Outlook 2011 Redownloading entire gmail account

So this has happened twice, and my blood pressure honestly has doubled.  I bought a new Macbook Pro yesterday, and repurchased the Office for Mac 2011, since my 2008 version was outdated.  When I set up Outlook, all 65,000+ messages from my Gmail account started to sync.  I called tech support, and they told me I have to deal with it. Fine. So after all the messages download, I went and filtered through all of them on my Outlook, and deleted close to 30,000 over a process of 4 hours.  

Now every time I open my Outlook, it starts to re-download all 30,000 messages I deleted.  I changed my gmail settings to POP, as a different thread said might help, and so I patiently waited as it re-downloaded them all, thinking maybe I just have to do it with POP enabled.  So the 30,000 downloaded again, and I deleted them all once again.  Go figure, Outlook is still trying to resync my inbox and downloading those 30,000 emails again.

If this honestly doesn't get resolved by the end of the week, I will be getting a refund and the last nail in the coffin for Microsoft products in my life with hammered on in.  I've liked Entourage/Outlook in the past, and would like to continue using it, but it is beyond ludicrous that Outlook would sync 30,000 emails I delete, every time I delete them.  What's the point of having Outlook if that happens?

Thanks for your help.