[Plugin: W3 Total Cache] Issue serving CDN CSS/JS files GZIP'd

After running W3TC successfully for over a year in Self-Hosted CDN mode, I recently switched to Amazon CloudFront CDN.

Since then both the CSS and JS minified files are being served/returned without GZIP compression.

I’m using ‘Origin – Pull’ method and a CNAME. Since W3TC creates a Custom Origin distribution, shouldn’t the headers be preserved?

My site is http://www.seriocomic.com and the CDN is CNAMEd using http://static.seriocomic.com. Is there anything basic i’m missing or setting I should be looking at?

http://wordpress.org/extend/plugins/w3-total-cache/