Your right and that's probably what took me back to the carb. but what a relief it was to see the compression good. I bought the engine thru a friend while i was rebuilding the truck. He said it was strong so i figured that was one less thing to worry with. But not tearing it down, you just don't know for sure. I think that was in the back of my mind the whole time. Looks like it is as it was advertised.