I had a brief love hate relationship with a Jubilee deluxe as a 17 year old. It was a temperamental starter depending on the weather and it leaked oil faster than Jed Clampetts back yard. As I recall, back then if a learner could get a hold of a Navigator engine, they would swop the 250 unit for the bigger engine, getting you more power and the old bill would never be any wiser. Even then, ace bars were stretching it lol.