I've recently finished the restoration of this engine. At first I thougt I wouldn't have to do any soldering work on the engine, but while removing the chimney, the solder around the steam dome broke off, so I had to solder anyway. I also had to resolder the steam pipe at the same time, since the boiler was getting so hot during the soldering operation that the solder there was melting too. After the soldering job, it looked like this:
It looks pretty nasty, but that's easily cleaned up.
I also soldered a new burner tube into the burner, and after that finished it of with some filler and a new coat of paint. Below you see waht it looked like before I painted it.
The baseplate, firebox and boiler strap where also painted, and after a lot more polishing, it came out like this:
I'm quite pleased with the result.