I just replaced my inner door handle assembly with a Febi from autohausaz. Straighforward job overall, with the exception of getting the allen bolt that goes through the opening on the side of the door to align with the stationary part of the outer door handles. Took me about an hour of finagling before I found a way to get the bolt to align with the thread inside the outer piece. But once I got it, the slack in the line is gone, and the door handle works again. Now to tackle the window regulator problem...

You know the little black plastic plug comes out of the door so you can access the bolt, right?

Of course - there's no way to access that bolt without removing that plastic plug.