Thanks very much chaps, much appreciated !
Made some good progress today, with a couple of long sessions at the bench, re-touching, masking (took bl**dy ages !!) and then brush-painting the black undersides and the de-icer boots on wings, fin and tail planes.
I could have used gloss black for the undersides, as the aircraft was gloss overall, but the matt black dries much quicker, and should look fine under a clear gloss coat, and, of course, tIme is critical at the moment, as the model has to be delivered on Friday next week !
The masks have been removed from the flight deck and cabin windows, and I just need to mask and paint the radome and the extreme fronts of the engine cowlings, plus a very small area that still needs re-touching, then I can apply a a couple of coats of acrylic clear gloss, ready for the decals.
Pics below show how things look. The "rough" patch on the underside centre section is a square of masking tape, covering the slot drilled out for the display stand.
I hope to get the decals done possibly on Sunday, or Monday at the latest. and I'll post further pics then.
Thanks again for the continued interest.