G'day, I've recently purchased this motor and am having problems.At first start up I warm the motor up but when I take off it runs on one cylinder for a good 100 yards and then the second cylinder kicks,when I back it off plane to idle it blows a lot smokeand idles very roughly.I immediately changed the plugs and noticed oil sitting around the motor,after changing the plugs it made no difference, anyone have any ideas.cheers-Kingo.