The clip on gear covers help keep the grease from flying all over the insides of the tank.
Hey Dean, that seems a stock Henglong gear? Care to share the 3D file for the gear cover with us?
Thank you Dean! This is really great that someone shares his complete build! (any chance on getting the STEP files?)
Currently I like to have the fan and smoke unit separate, as I do not want to be burning the smoke oil all the time.