Default block quote image extending above text

Hello!

I’m using the default block quote function in my posts, however I’m finding that the default block quote image is extending above the boundaries of the text. In other words, the default thick red line is going above the text.

Here is a screen shot of the back end of the post:
http://grab.by/HZ2q
http://grab.by/HZ2u

And a screen short of the front end of the post, where the default block quote image is extending beyond the boundaries of where it should (area in question circled in red) :
http://grab.by/HZ2i

How can I keep the default block quote thick red line to stay within the bounds of the text?

Thanks!

-Richard