Did you use a resin printer for the domes? They sure don't look like they were printed on a FDM printer.
yes, indeed. I use an Elegoo Saturn with water washable resin. I also own a Prusa i3 filament printer that I love to use on all constructive stuff or underframe work to repair 3-rail compromises into nice 2-rail models. Both have their pro's and con's.