Thanks very much Vic and Wayne. I've now done the touch-up and clear coat on the first seat, and almost finished the rear seat. Had a bit of a break from all the fiddly stuff, and did some not quite as fiddly stuff, by painting most of the detail areas on the model, although there's still some re-touching to be finished, and more to do after the matt clear coat, especially the area around the jet pipes, which will be various metal tones.
Here's what it looks like so far.