BME,

Thanks for the comments. The Stihl didn't have the flywheel. I have a EI unit without the Syncrospark so I'll try your suggestion. As far as the counter balance weight is concerned is there any way to determine how much under weight it might be? If I installed a 3"dia X 1/2" piece of aluminum on the prop adapter and then removed material on the side opposite from the crank counter weight would this help? Any comments would be greatly appreciated.

Will