Needs much choking to start, 12 pushes on the key, but not lean when running. A little rough at lower speeds. It sonnds like it has a slight miss at high speeds. Compression is pretty good, recent de-carb, low hours overall. One mechanic says he would rebuild the carbs for around $400.00, and that I will see a significant improvement. Another says it's just getting tired, the magnets get weaker making it hard to start, etc. Any ideas? Thanks