Thanks Bud & Martin,
The engine is well under way. Oddly there are 2 left hand side parts in the kit - one is a rather crude representation of the rockers and rods all moulded as one and the other is a finely moulded version without the rods (ideal for adding your own with fine brass or plastic rod). The kit says this part is 'unused' but for me it's the far better option! The first job was to cut away the spark plugs and replace using brass tube again. I realise this is quite a crude way of replicating them compared to what could be done, but it's quick and convenient and, unless magnified, looks pretty good and has the added advantage of creating a secure attachment point for the ignition wire (copper coloured 0.17mm monofilament).

I'll post some more pictures once I've finished the engine - rods etc in situ.
Having finally closed up the fuselage, and sanded down the seams (this actually went perfectly well this time! There's a first for everything...) I've got a coat of primer on. I've only recently discovered Tamiya Fine Primer, and it's really excellent. It produces a very even finish that is smooth as silk. I always used Halfords primer in the past, which is also very good product, but quite coarse in comparison (although cheaper!).

Now I can get stuck into the painting

Guy