I still have to add the servos which will be powered from the Pololu board providing extra automation but apart from that virtually everything is now fitted and completed. All the head mechanisms now work controlled by a 360 degree servo, all the gears and cogs move. I have moved the water spray system nozzle to the front next to the main wheel piston. The second smoke generator has also been fitted behind the back bag and vents down the side of one of the batteries through an exhaust. Lower grill under the front boiler has been added and can carry a small shovel or coal.
Once I get the final servos fitted and other minor cosmetic changes sorted I will get some video uploaded showing the head mechanise and smoke systems working.