I have seen one other post on this with no answer to the subject. Manual states that there will be an index mark on the cam for syncing. There is no mark on the cam on this motor. Suggestion on how to make sure that this one is set correctly? Right now it runs at high but dies at idle - I am guessing I am running on one cylinder which I will check first. Carb is clean. Coils are good and had good 1/4 jump at test - no followup on if it still does as it started raining. Please let me know on the cam and cam follower. Thnx.