I repainted the roof and then refitted both it and the bogies. You inevitably get gaps between the roof and the body; as an experiment this time (this was after the photogrpah was taken) I tried glue 'n' glaze as a filler, reasoning that as it can be applied quite accurately it might make for less of a cleanup job afterward. I think it works!

Then the solebars were repainted...

I think all that is left to do now is to fit the transfers and varnish it.