I have a 1995 30 hp johnson j30ELEOB I took it out this weekend and had exhaust and some water coming into the cowl which I found out the because it was being sucked into the carb and stalling it out, I assume from what I saw that the its the gasket that connects the power head to the lower unit so anyone know what is involved in replacing it, is it simply removing the bolts that connect the two and changing it out?