I am working on an email in which I am using a bulletproof button. I am experimenting with using a webfont in the button and it looks great:

It falls back decently when the font isn't supported:

However, in high DPI (Outlook 2013 120DPI), the button is broken:

Is there any way to fix this?

Here is the button code:

<td align="center">
  <div><!--[if mso]>
  <v:rect xmlns:v="urn:schemas-microsoft-com:vml" xmlns:w="urn:schemas-microsoft-com:office:word" href="http://www.focusonline.org/site/LearnMore" style="height:36px;v-text-anchor:middle;width:133px;" stroke="f" fill="t">
    <v:fill type="tile" src="http://www.focus.org/assets/images/emails/appeals/button-bg.jpg" color="#ceb184" />
    <w:anchorlock/>
    <center style="color:#3d3935;font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:19px;font-weight:bold;">Learn More</center>
  </v:rect>
<![endif]--><a href="http://www.focusonline.org/site/LearnMore"
style="background-color:#ceb184;background-image:url(http://www.focus.org/assets/images/emails/appeals/button-bg.jpg);color:#3d3935;display:inline-block;font-family:lipsumregular, 'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:19px;font-weight:bold;line-height:36px;text-align:center;text-decoration:none;width:133px;-webkit-text-size-adjust:none;mso-hide:all;">Learn More</a></div>
</td>