I've always thought Villiers made some of the best-built unusable engines I've ever found, BB. Mechanically, they'd last a long time (though of course in the two strokes the piston rings wear pretty fast, due either to poor ring design or poor lubrication.) The main point is, however long they lasted it seemed even longer due to hard starting, and unreliable carburetors and ignition systems. Essentially, I'd say they had the British engine disease. That probably only adds to their charm to a collector, though.
As I've just posted in another thread, there is nothing on those engines in the manuals section. If you contact Bruce he may be able to get something, I can't guess the outcome there.
