Confict Between Avada Theme’s Lightbox, Fancybox, and Nextgen Gallery

I am building a site using the Avada theme, and they have their own built-in lightbox which I like. I am also using Nextgen Gallery. Avada’s lightbox does not work with Nextgen. Nextgen has their own choices for lightbox, but I don’t like them. I like the look of EasyFancyBox for those galleries. So I set Nextgen lightbox to “none” in the settings. I have EasyfancyBox activated on the site, and Nextgen images open with it. But with images on other pages of my site, I get double lightboxes. How do I turn OFF the EasyFancyBox on those pages, so that Avada’s default lightbox will be the only one?