Rule ignores one .css file

[Mike Blake-Knox]

I've created the following simple rule intended to override the use of excessivly small absolute fonts on some sites:

Name = "Normalize small fonts <0-14>"
Active = TRUE
Limit = 256
Match = "FONT-SIZE : [#0:14] px"
Replace = "FONT-SIZE : 15 px"

It seems to work most of the time but I've noticed it doesn't work on at least a few stylesheets (e.g., the one at http://img.techweb.com/internetweek/internetweek.css). This same stylesheet is processed quite successfully in the Test window.

Can anyone help please?

Thanks

Mike