Are there any unique maintenance steps for the Mobius SP airbrush? 

Yes. Always flush the siphon-feed tube immediately after use to prevent paint from curing inside the fluid channel. During deep disassembly, remove the air cap, nozzle cap, and nozzle first. Once the nozzle has been removed, carefully remove the needle through the front of the airbrush. This helps prevent the needle tip from hitting internal components and avoids dragging paint residue into the rear spring housing.