I've got an older (1986 I beleive) Snapper LT16 garden tractor. It's got a twin cyl 16 hp Briggs, high/low axle; it's quite a tank. It's set up to tow your standard garden tractor trailer that hooks up with a hitch pin. I'd like to find a 1 7/8 ball to I can move my 4x8 trailer out from the back part of the yard. Does anyone know if someone makes a ball that has a really narrow shank to fit in the hole that the hitch pin now occupies?