iPhoto 7.02 breaks the old double-arrow scrollbar hack

I've had double arrows at the top and bottom of my scrollbars since I implemented this 10.1 hack:

macosxhints.com - Scroll arrows at both ends of scroll bars [10.1]:

... OS 10.1 adds an option in the General prefs to have double-scroll arrows at the bottom of the scroll bar. Scott R. wrote in with a quick preferences hack to enable double-scroll arrows at BOTH ends of the scroll bars. If you'd like to enable this feature, simply start a terminal session and type: defaults write 'Apple Global Domain' AppleScrollBarVariant DoubleBoth You then need to logout and login (or, perhaps, simply force quit the Finder) to see the effect ... but once you've done so, you should have double-scroll arrows at both ends of your scroll bars.

....To return to the normal mode, use: defaults write 'Apple Global Domain' AppleScrollBarVariant Single (or you could just open the [Appearance] pane in the System Prefs and check 'At top and bottom') or defaults write 'Apple Global Domain' AppleScrollBarVariant DoubleMax to put them together only at the bottom (again, this is equivalent to clicking 'Together' in the General prefs panel for scroll arrows).

Alas in 10.4.10 with iPhoto 7.02 one sees odd gaps at each end of the scrollbar. I turned off this old hack and iPhoto's scrollbars appear normal again. I'm not sure they don't have some new behaviors though ... they feel somewhat Leopardish.