gzip not happening on cache CSS and JS files

Permalink
While trying to make my site speedier, I noticed in FireBug that it was saying most of my CSS and JS files were not being delivered via gzip compression and I could save X amount of space, etc. To confirm, I usedhttp://gzipwtf.com to check what it said. Same answer. Looks like the only gzip CSS files I have are coming from google fonts, while all my CSS cached versions (i.e.:http://www.some.site/blocks/unoslider/templates/ribbon/css/unoslide... are not being gzipped ?
I have gzip enabled and verified to be working. So how do I force it to send cached CSS and JS resources over gzip?
Any enlightenment would be much appreciated.
Thanks in advance.
Pat.

PatrickHenry