Most rudder systems need to be tuned when you get them from the dealer. There are a number of adjustments that need to be addressed, and you will really only get the boat finely tuned to your liking after several sails and several adjustments.
Cam tightness - The tensioning Delrin screw inside the ruder casting needs to be adjusted to provide the correct amount of pressure to make sure that the rudder stays lock down, but the rudder should kick up with about 25 lbs of pressure applied..
Lower delrin screws - to help adjust rudder rake. There are various places to find reference to this on the internet and publications. I don't use a lot of mast rake, so it is not really ever an issue for me.
Cam plate - this basically helps keep the upper rudder casting to hold flush with the lower casting. There should be no gap when you are sailing. This is adjusted by moving the bolt on top of the upper rudder casting forward with the rudder locked down till it is fully under the cam.
Tiller Cross bar- to adjust the "toe" of the rudders relative to each other. Again guides for this can be found in various publications and documents on the internet.
Basic slop (shims, bushings etc..) - basically removing back and forth slop which will also cause wear on the cams and castings as well.
These are the basic components involved. Be prepared to adjust, try it , adjust etc.. till you get it "right" for you.
There are also other factors like mast rake and really how you sail that effect all this as well.
Another basic rule is you want some weather helm so the boat will round up when you let go of the tiller., but not too much so that it is hard to steer.
Here is a nice video:https://www.youtube.com/watch?v=7jfn8f9 ... AFsPGfgAb5
Also, give a google search and you will find a lot of helpful info out there. Matt Miller has a helpful overall tuning guide as well. Check the FAQ section for that. Good luck.