My Casefeeder has a small metal plate that's clipped onto the area that the case drops from. (Sorta like a money clip.) If you move it so that it makes the hole that the case drops into smaller, then the case neck will be supported before the balance point of the case is reached and it will only drop the head. This makes the cases fall in the correct orientation.
Hope this makes sense. If not I can take a picture.
EDIT: Here's a good explanation of what I'm talking about. (but with a homemade casefeeder.)
http://www.youtube.com/watch?v=tFxgX...eature=related