5 hp gale PLEASE HELP

[Old outboard dude]

I am making a water cover gasket for a 1961 5 hp gale outboard and I need to know if I need to make holes for the triangle spot in the top left of the picture and the small hole underneath the first hole on the right. Please tell me which hole or holes I need to cut on the gasket. Thanks

 

[F_R]

Can't tell about the round one, but the triangle one certainly is in the original. Hey, you probably don't have to make it triangle---how about a few piercings with a hole puncher?