I have a ys 91 with all fuel and vent lines inside cowl i am going to use a fuel dot fuel line hook up with 3 lines vent , fuel line clunk and vent line to keep from pulling vent line off at the check valve location to refuel all i need to do is add a tee hookup coming off the vent line out of the tank and running one of the vent lines to the fuel dot location ?? correct or incorrect ??

You will need a tee in the fuel line between the filter and the tank, and one between the check valve and the tank. That's all that is necessary.

Dave