Here is what I resorted to. I use ThreeWP Broadcast plugin to broadcast pages and posts to my other sites, then I manually go into my database and in my second and third sites, I delete the ngg_photos and ngg_gallery tables (I did not use albums so I did not have a need to delete that one). Then I exported the ngg_photos and ngg_gallery from the first website database and then imported them into the 2nd and 3rd websites. Sounds complicated but it only takes about 5-10 minutes.
Not ideal scenario, but it ends up working.
