i noticed that my exhaust cover had some dried rusty water spots under one of the bolt. upon starting my motor i did note some drops of water coming out of one of the bolts. my motor is a 2004 90hp 2 stroke. i was going to try to replace the two gaskets myself. i have two questions, would it hurt to run the motor like this, and would i run into any chance of breaking a bolt off replacing the gaskets? would this be the correct part number for the gaskets? 27-43004009 thanks.