Wanting to "unbold" certain headers

Hey –

The “Daniel Kroemer” text at the top of my “About” page is an H3 header but seems to be a regular weight, which I like. There are other places on my site that seem to have H3 headers but they’re bold (blog header, portfolio single page header, and product header). I would like to make these the weight of the About header, rather than bold. Aside from liking the look better, I see that on the single page portfolio view, all of the text goes UNbold while the “easy slider” is sliding, and then goes back to bold once the image stops. It does the same with the standard small text on the portfolio single page as well. Any help would be appreciated to UNbold the headers of blog, single page portfolio header, and product header, and to fix the easy slider problem.