Rocker cover and pushrods. Unbelievable! I had the cover on and of so many times that I have lost count. Every time three of the push rods located correctly and one was dislodged, and always a different one to the time before. I used all methods The comb, hooked wire, and thin screw driver. Eventually the comb triumphed. I have to marvel at how it was done on the production line. Clearly a job you were given if you had upset the foreman. It really is an awful design. I agree timing is also a rotten job but that is not an exclusive BSA design problem. Any magneto equiped bike is problematic, but the A10 pushrod/ rocker cover is the spawn of the devil. Ah well tomorrow is another day. Who knows I might even get to go out for a ride.
John