Toeing inward is a good thing but not to much. With the boat on the trailer and the rudders system in place, lock both rudders in the down or sailing position. Next, there should be some screws under the crossbar ends; loosen them. Take the tiller yoke on the crossbar and align it with the middle of the boat. Tap in or out on each of the crossbar sides until the rudders seem even. At 12" down from the bottom of the lower rudder casting, measure the across front edge of the rudders and then take a measurement across the back of the rudders in the same place. The front measurement should be 1/8" smaller than the rear. Tighten the screws.
Bob