This one always causes debate! Start off with the rudders in the locked down
position. Measure down the blade 12” from the bottom of the bottom casting.
Make a line 2” perpendicular to the 12” point. Using a very thin line and
starting at the top of the rudder pin, align the line with the rudder pin
and check where the line intersects the perpendicular line on the rudder.
Optimally, you should have 1 5/8” to 1 3/4” for a measurement. To achieve
the 1 ¾”
number, you might have to re-drill the front hole on the rudder or
file away at the front of the rudder where it hits the casting.
Rudder toe in should be 1/8” with the rudders in the locked down position
again measured from the 12” down point.
Good luck! This works well with a lot of mast rake.