One other point to look for is the clutch lifting mechanism. Remove the cover on the left side over the sprocket and remove the rod and the ball inside the shaft and fill the space with grease then replace the ball and rod. Also push grease in the lifting cam in the outer cover, all the rotation at the shaft will cause the parts to squeal if not lubed proper. And don't be fooled with that stuff that looks like grease from China its just Water Buffalo snot. Hope this helps. You can see the placement of the parts in the tear down. Have fun, Dave

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Chuck - The monkey has the spark plug again!