Hello folks, I followed your advice on the spare engine thanks very much - cleaned and set the points then spun the motor by battery drill with a new plug hanging on the lead. Immediately had a good spark, no spark from the Bantam engine so far. I'll most likely swap the spare magneto onto the machine the next time that I'm around. Howardman, is it possible to have a pdf copy of the AC120 manual thanks, I can cover any costs by Paypal. Also, does anyone know of some easy to purchase solid steel countersunk rivets, around 1/4" D x 5/8" or 3/4". I found some in the US and gave up trying to use a foreign address. regards, Dave