Had some success today.

I got the frames together very easily. I needed a bit of fettling to get the radial axle in place. I look forward to testing it through some Peco points in a day or so.

The coupling rods where then joined and the holes opened up so that I could set up the side frames and bearings set up for compensation. I have added the central pivot on the rear axle, I still need to make a support for the front. Once this is done I can untack the bearings and then solder them to the side pivot arms.

I also need to set the side play of the wheels ready for checking the clearances through point work.

I am pleased with the way this is going. The assembly is going far easier that I expected. There was a bit of tweaking to get the bushes and coupling rods lined up. But I have had far worse. Apart from the side play I should get the front pony made, and then on with the cylinders and valve gear which I have not even looked at.