hey guys quick question the service manual for this old engine, are there two different manuals? i bought one that does have some specifics, i dont have it with me to take a picture, but it looks like and someone correct me if im wrong but it looks like you can buy a service manual that has the actual engine tear down processes etc, and a less specific one almost like an owners manual, is that correct? i see two different prices for these manuals, one seems to be slightly less than the others, is there a separate owners one and a separate service one more specifically geared towards tearing down the thing and rebuilding the engine?