Gallery_rss Gallery plugin – how to get album highlight (larger image)?

I’ve been working with the gallery_rss plugin from smartbrother.org to provide the highlighted image from menalto gallery (version 1.4.4) into a page in WordPress. The issue is, it appears to take the thumbnail version of the highlighted image and not the larger album highlighted version – which is the one I want to display. Is there a way of coaxing it to display the album highlight rather than the gallery’s thumbnail image?

If this is a limitation of RSS, perhaps there’s an alternative way of posting the album highlight into a WordPress page?

Thanks in advance.