sorry for the late reply but no there are no marks on the opp side thats what i thought but there is a ridge on the other side and no marks. i/ also gave the background I had for it in another post in this thread and all the other parts on that motor were fine. but who knows i/ just thought it should be posted so it can be added to the number stats and it wasn't just that it was other things the cot key was just loosely placed in it and other machining marks that were?????