The bolt holes in the new pintle are intended to align with the holes in your old rudder. But since the rudders are hand made, variation in thickness sometimes introduces a variable that causes misalignment. It may be necessary to fill and redrill the holes in your rudder with epoxy (see "May we also suggest" below).

Pintle diameter: 3/8"
Maximum width of rudder: 13/16"
Distance between mount holes: 1-7/8"
Length of pintle: 1-1/8"
Diameter of mount holes: 3/16"