[Plugin: NextGEN Gallery] Caption Overlap & Spacing Issue

I am using this hack to create my NextGen Gallery on my portfolio page:
http://wordpress.org/support/topic/plugin-nextgen-gallery-how-to-envoke-a-lightbox-gallery-with-just-one-thumbnail?replies=16#post-1757488″>

Portfolio Page

My problem is that my captions are overlapping some of my images in my gallery. How can I fix this?

Thanks in advance for your help!