please can someone tell me where to find the timing marks on the flywheel of my 75hp 1965 v4 Johnson. This baot has been sitting forten years and I changed the belt and would like to set the timming but not sure where the mark on the flywheel is? I know where the marks are located on the detributer. There is a letter N stamped on the top of the flywheel but not sure if this is the right mark? With a screwdriver in the cylinder and the mark lined up with the stamped N on flywheel the piston still has a ways to go befor it is at TDC could be the right mark ??