[XeTeX] OldStyle symbols with Hoefler Text?

[chagrins]

With Adobe Garamond Pro, when I use

\defaultfontfeatures{Numbers={Proportional,OldStyle}}

...it also outputs "lowercase" symbols - for example, the dollar sign
matches the numbers.

However, in Hoefler Text, I can't get the symbols to match the numbers
- I always get the capital dollar sign.

I can manually select the lowercase dollar sign in Hoefler Text using
Pages, through "Glyph Variants" in the typography panel.

This seems like it could be a problem with the buggy version of
Hoefler Text in Mac OS X, but is there a way to manually select the
lowercase dollar sign glyph as a workaround?

Screenshots illustrating the problem attached.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Hoefler_Dollar_Sign_Too_Big.png
Type: image/png
Size: 13749 bytes
Desc: not available
URL: <http://tug.org/pipermail/xetex/attachments/20100818/f4fa751b/attachment-0002.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Garamond_Correct.png
Type: image/png
Size: 12673 bytes
Desc: not available
URL: <http://tug.org/pipermail/xetex/attachments/20100818/f4fa751b/attachment-0003.png>