as much as you dare?
One of the major reasons for integrated headset problems is failure to properly tighten the top cap to preload the bearings. It takes a lot more tension than old syle caged-ball headsets. If you've been using the HS for years with a loose adjustment, you may have damaged the frame. Some frames have replaceable bearing seats and some don't. If the seats are damaged and not replaceable, then you'll have to hunt out a shop with the cutting tools to repair the seats.
http://www.parktool.com/repair/readhowto.asp?id=65
One of the major reasons for integrated headset problems is failure to properly tighten the top cap to preload the bearings. It takes a lot more tension than old syle caged-ball headsets. If you've been using the HS for years with a loose adjustment, you may have damaged the frame. Some frames have replaceable bearing seats and some don't. If the seats are damaged and not replaceable, then you'll have to hunt out a shop with the cutting tools to repair the seats.
http://www.parktool.com/repair/readhowto.asp?id=65
