2014 F150 Blowing water from exhaust

[TownsendsFJR1300]

I used grease on all seals. I noticed that some images of the lower unit show an exhaust seal which I don't have in my motor. It sits inside the exhaust port on the lower unit next to parts 10 and 11.

That pic is too small to be useful.

Anyway, here IS the link TO your EXACT ENGINE lower unit. https://www.boats.net/catalog/yamaha...casing-drive-1

Which seal (part #) are you missing?