linking it to core could be as simple as something like this.
Wings either side of the core, made so that they are close to the gantry beams
Or a 3D printed arm that is arched to clear everything and can flip up outof the way and over the back of the core. this arm just drops into a slot on the top of the dust core.
Dunno jsut spit-balling, but i like the idea of the arm more than the wings.