Thanks for all the comments folks!
A little more progress to report, in that I have now fitted the pins that will (hopefully!) secure the wings in place....


It's annoying to note more errors on the Datafile plans: the fuselage is 2.5mm longer, and the wingspan 2mm longer, in the elevation drawings than in the plan drawings! IE: the drawings don't even match themselves! The kit fuselage matches the elevation, so that is what I have been using. I then noticed that the centre and outboard wing struts should be a couple of mm further inboard - but if I correct that now they won't match the rear support bar for the folded wings, so they'll have to stay wrong....
A little more tidying up and then I can start to get some paint on. White first for the undersides, a more tan colour for the uppers and fuselage, then add the upper wing decal shadows and ribbing, followed by the final colour.
Ian