with sk6, you basically have to have square edged dragbars, the round ones dont work as well, when it is scrolled up to the top you
will get confliction with the arrow and it sort of moves over it, the only solution to solve this is if you skin the background of the drag bar the same as the scrollbar background, but you can still have issues, the best solution is to have square edged drag bars....(they dont have to be sharp square edges, you can buff them a bit so they look a little softer) hope this helps!!
i just rememered something else too, skin your arrow button right to its edge limit, that way the drag bar has no where to go but to the edge of the arrow button.......