Be careful with this. Google serps can't discern who has the original content. If the page using your content has a higher ranking, Google will assume they have the original content.
Changing your forum urls to static was a great idea! (Not an easy task, I know.) We don't put Adsense on forum either, they are too "chatty" in there, and click around alot.
Best of luck on your journey, you are definitely heading in the right direction. :)