Finally, I am happy with the running - was pretty good on the whole but just one bit of valve gear was giving a problem. Eventually, nipping up the rivet with some pliers sorted it out. So onto fitting the chip and sound. First job was to drill some holes in the tank backs and the boiler bottom to let both sound and wires out;

Then a simple job to fit a speaker into each tank;

The chip fitted in my slightly remodeled bunker and was then covered with a piece of plasticard which will, in turn, be covered with coal. There is a fair amount of messing around with routing wires under the floor and through the boiler with this set up but is the only way to fit it all in.

Everything all snug and flywheel fitted once I was sure it was not going to foul any wires;

One little brainwave I had was to keep the boiler top separate so to keep it in place I have used a couple of magnets - should be obvious from picture;

So here it is, almost finished and ready for some paint, which, given the rather simplistic nature of the livery, shouldn't take very long!