hi all i have a 1986 larson senza with a 15 gallon built in tank . the tank takes quite awhile to fill it will come up to the top of the cap and then it takes forever to go down abit before i can add more fuel to it then i have to wait for that bit to go down .the filler hose runs down the inside of the boat and then across the floor to the tank .i was thinking of putting a bit of angle on the hose to see if this works better . also when i try to fill it it keeps coming out the vent tube . has anybody out there had this problem and know of a fix ? thanks .