For me this is progress.......
I love these ports......BUT......the instruction SUCK.
Some free advice for NFM and all producers of marine (and all) equipment that has to be installed by an end user;
Rule 1: No one involved in the project is allowed to write the manual (after all you understand the fu$%*ng thing, you designed it).
Rule 2: Carry your project around until someone asks "what is that?" Ideally they should have no previous experience in the area where this item is to be used.
Rule 3: Have them work out how to use the item, with minimal assistance from the designer.
Rule 4: Have them then explain how to assemble/work the item to a person who speaks another language. Have that person write the manual.
Most importantly try to stick to one system of measurement (i.e. imperial OR metric).
Other than that, it was a breeze.