Chopped Off Text

Can someone tell me why the last letter of text in some of my movie clip buttons is chopped off? Take a look at the URL below and click on the Demos button…you will see “promo” and “narration” are slightly chopped off. When I go into the movie clip there in nothing wrong and the mask I am using is plenty big enough - the whole line of text should be showing.

http://vojodesign.com/proofs/russHarris

Thanks in advance