You'll find some contrasting opinion regarding rudder alignment - some say to toe them in slightly, but I prefer to align them as straight as possible. First, obviously, you need to remove as much slop from the system as possible. Then with the sterns elevated and the rudders in the down position and pointing as straight forward as possible, measure the distance between the two leading edges and remember the measurement. Then come straight back at the same elevation and measure the trailing edges. Adjust until the measurements are the same.

Also note that some of the 5.2's have ackerman steering - the rudder arms are bent toward each other slightly. If this is your case, it is important that one rudder be pointed straight in line with the hull before you start aligning (because the arms are bent inward, the outside rudder in the turn will turn less sharply than the inside rudder to accomodate the outside hull making a larger radius.