Hopefully the engine misfire problem is taken care of finally..As said before problem finally happened when I could get to shop for repair. <br />Put on new power pack which seemed to be help and found that new timer base was breaking down at what seemed mid temperature. When heated up the problem went away. Cooled down it was okay, about mid temp it would act up. Warrenty replacement of timer base. It has never run this good since I had purchased it about year and half ago. Thanks to everyone who contributed advice and helped.. Dewley