I received the wrong owners manual with my 2007 5.0L mercruiser engine in my Bayliner 212 boat. I followed manual instructions and drained the 3 point systen blue drain plugs. Now, I find out that there are at least 5 drain plugs and the correct owners manual describes the multi point drain system correctly. The block is cracked and Mercury Marine will not cover the engine under warranty. The boat and engine were still under warranty when I returned it to may dealer. Can anyone who might have had this problem respond and did you have any luck resolving the problem? Should I contact the better business bureau or an attorney? Please help!!