The etchings were cleaned up using a file (gently!), 3 sided scraper and, most importantly, a fibreglass burnishing brush. Once everything was cleaned I could start thinking about re-assembly. As before I started with the footplate, which revealed a bit of a problem;

(Note the Gibson sprung buffers, these come with square bases which need to be filed rectangular).

The lower part of the bufferbeams had been filed back too narrow for the re-constructed frames. So I cut pieces of scrap etch to make a repair panel, cut the offending lower part of the bufferbeam away and soldered the new section in place. Like this;

Then the bufferbeams can be soldered in place;

The lower section was made too wide so they can be filed down to the exact width of the frames, in the photo above the end nearest the camera is finished and the other end is waiting to be done.

I don't intend going into much detail about the rest of the build as it's been covered before, unless its specific to this loco like the above.