I need some legit help and not a book answer, or someone to help explain why the carb model in the book is wrong. I'm replacing the carb on an MV7, the carb model that I have received twice from purchasing via catalogs and websites is not only the wrong one, but they are identical with different serial numbers. I know that they make one for 2004 and before and one for 2005 and later. Yet I can't seem to get one that fits. There is a fuel diagram in my manual that shows 2 distinct fuel lines that attach to the carb, one is a basic fuel line, which I have the fuel nipple/connection point on my carb, the other is the fuel impulse line, that connects to the opposite side of the carb, with a separate fuel line connection port on the carb. If you know a carb number that has the two fuel input lines, can you please share. The book answer will state a certain model number, however I'm looking for someone that might have or know of someone that has an MV7, that they can look at the carb and say this number will work.