retweet posts still appearing

Hi! Thank you for your awesome plugin…it’s simple to use and makes my life a lot easier.

I am having trouble with one issue….When I check the box for
“Remove all @replies from posts (removes retweet “RT @user:” text as well),” it doesn’t always work for replies and I get many duplicate posts. Is there a workaround?

http://wordpress.org/plugins/twitter-posts-to-blog/