What Percent of a 5th Wheel Trailer King Pin Should be the Tongue Weight

Adapter to Go From 3 Inch Hitch of 2017 Ford F-250 to 2 inch HItch

Aluminum Vs. Steel Trailer Wheels

Will the Use of a 2-1/2 Inch to 2 inch Trailer Hitch Reducer Sleeve Reduce the Hitch Capacity