Rudder and elevator are aligned? Umm... they are designed to move. You hinge them. Just push them on using the hinges supplied (if CA..) simply put a pin through the center of the hinge and push it in to the pin on one side, push the control surface on the hinges to the pin, remove the pin, make sure that there is as small a gap as possible while still giving full movement, then apply the appropriate glue.

Now, if you are asking about the horizontal and vertical stabs.. well, Jetmech has that answer for you.

Jetmech.. if I may add.. if you have cats around, watch that they don't just pop up in curiosity, and warp that alignment on ya. Yep..personal experience..ha..