Interesting, out of curiousity, how was the the text colored? Normal fill, a layer style, or an overlay. This reminds me of what an overlay could do if it is not the same size as the text. There isn't much need to do overlays any more, but I added it as an option anyway.
There is a drop shadow layer style, but the text colour is directly from the swatch on the options bar sampled from the hills in the background. No layer masks involved. Just a plain vanila tyle layer with Bickhan Script MM. No Faux character styles.
I emailed Nigel French a few years back, to say thanks for the excellent Lynda.com Photoshop for Designers - Type Esentials he produced, so I might run it by him, just for interest sake.
This is Nigel's reply. I'd love to be able to say that the X1a 2001 preset fixed the problem, and it may well have rendered better colours from a printing point of view, but the colour still didn't extend to the ends. Oh well, We learn a little more day by day, and so long as we have workarounds, I guess we are happy.
Getting a good PDF can sometimes be a dark art. Problems like these usually have something to do with blending modes and color modes. If the document is intended for print, I'd suggest using the Press Quality (or X1a 2001) preset rather than the somewhat erroneously named High Quality Print. These convert colours to your destination CMYK profile, whereas High Quality print makes no change to the colours.