Uncle Tony speaks the truth

Exactly, that's why I don't understand why people will spend big bucks for an unknown "running" engine off of "ebay", "craigs", "these forums", etc. All they are doing is taking someone else's word for what they are trying to sell. To me, all engines are a core and need to be completely disassembled and rebuilt unless I personally know the complete history of it. Otherwise its a crap shoot and most times you will loose, just like at the casinos.