issues with core theme

hi,
I inherited a project for photography website using core theme from theme forest. it seems to be very inflexible. what I’m trying to do is have some control over some aspects. on the blog page, it’s not loading a blog post but trying to load a gallery. we don’t want to load galleries on the blog page. second I would like to modify the size of the images on full screen because client doesn’t seem to like the flow slider. any assistance will be appreciated. thanks
souleye