And here is what I've been doing with the engine. The original kit just has an angled space to glue the cylinders onto, so I stuck them on a bit of plastic card and cut the cowling up to sit it more 'inside' the cowling than before. I also remade the airscoop because the kit one is far too thick, has no detail and doesn't really sit on top of the cyliders as it ought to. I have also added some wiring (whcih isn't finished) and somewhere for the prop to go.