Customizing the {TRUNCATE_ITEM_DESCRIPTION}

Hello,
How do I adjust the {TRUNCATE_ITEM_DESCRIPTION} so the title isn’t repeated in the description?

I’m using a RSS feed of a Google News Alert. It displays fine on my page, but it’s repeating information I do not want. Here’s the original listing that Google displays

Corbett signs off on funding Arlen Specter library
Philadelphia Inquirer – ‎Feb 10, 2012‎
HARRISBURG – During his 2010 gubernatorial campaign, Tom Corbett made the funding of an Arlen Specter library in Philadelphia the punch line of a campaign ad about wasteful government spending. Think of that funding, Corbett said in the television ad, …

Here’s how it looks on my page. The title is repeated in the body. I prefer to keep the linked title.

Corbett signs off on funding Arlen Specter library – Philadelphia Inquirer February 10, 2012
Corbett signs off on funding Arlen Specter libraryPhiladelphia InquirerHARRISBURG – During his 2010 gubernatorial campaign, Tom Corbett made the funding of an Arlen Specter library in Philadelphia the punch line of a campaign ad about wasteful government spending. Think of that funding, Corbett said. […]

Any advice will be appreciated!