I'm using citations with the @ at the end to indicate page numbers or ranges, like so (in Scrivener):

- Screen Shot 2012-03-27 at 1.11.17 PM.png (60.14 KiB) Viewed 3300 times
I used the Formats Manager to remove periods from the ends of citations, because (as you see here) I like to insert my own. For instance, here's the format for the first of these two citations above:
a, t$, $$trans. $u3*|~, ~u2~ ed.~~, ~u13~ vols.~~, vol. ~v|~, ~f` (`l: u, d$; reprint $u12`)`
But in every citation where I use the @ for a page, or a page range, Bookends inserts a period after the number. Like so:

- Screen Shot 2012-03-27 at 1.11.26 PM.png (47.58 KiB) Viewed 3300 times
How can I fix this setting? I'd really prefer to continue using the @ for pages, like this:
{Johnson, Lives of the Poets, #100320 @159}.
Rather than resorting to quoted text, like this:
{Johnson, Lives of the Poets, #100320\, 159}.