Wasn't the Midget a sloper, Deejay? I don't think I've ever seen an ATCO with a sloper, I'm used to that appalling cast iron cylinder 2 stroke Villiers with the porthole in the flywheel. And an 18 mm spark plug, unless mine was an unusual one. That little Villiers should have been used as a power source for dirt compactors, it was the vibratingest little engine I can ever remember encountering. It was also hard to start, and extraordinarily difficult to time, having no keyway on the crankshaft or flywheel. There's nobody like the British for making things that are so crummy they should be thrown over the fence, and so heavy they can't easily be thrown.