I think JeremiG might know the answer to this, but anyone´s advice is appreciated. I got a 74 360T with 2900 original miles and it is a cherry! Other than a weak charging system. (I quit wasting time with the electric leg) I am concerned about the cam chain tensioner. I DO NOT have the punch marks on the case like you mentioned. Is there a replacement available for the tensioner arm? I don´t want to ruin this motor. I want to commute 75 mi. round trip to work on this thing. Any help would be appreciated. Thanks!