Finally managed to get some energy to add the dome rings inside the ESB and RotJ domes that connects with the dome ring on top of the face masks. Uncertain whether the tolerance is good - we will see once we get some sets printed. I gave the ring and screw cutouts enough space, hopefully, for them to sit right every time, so they can just be glued down once the parts are painted.
Now I just need to fix some topology errors along the perimeter of the inside of the domes... that may take a few days' worth of work... and then I will have to figure out whether I will add a spacer inside the ANH dome so it will sit correct every time or whether I should just let people sort that, so they can match a specific dome position look from the movie themselves, which wouldn't be possible if I locked things down. The dome in that movie - due to the 3 apple tabs dome system - was all over the place. No wonder they changed it to the ring mounts, as people working on the movie and tour has stated that it was a complete PITA to put the dome on right and securely.