Empennage: Rudder. Trailing edge riveted.

I decided to redo my rudder due to the trailing edge.  Here is the post outlining the new rudder. 

The trailing edge on the rudder has been riveted.  To mitigate a curved edge, I picked up some angle iron. 

The edge turned out fair.  It's reasonably straight but since we alternated the rivet orientation to give the rudder a cleaner appearance, there is a minor waviness to it.  In fact, it's the skins that are wavy.  The trailing edge wedge seems fine.  Might be due to excessive pressure from the riveting gun.  We did have to turn it up to drive the rivets properly.  My guess is the angle iron flexed too much.  Perhaps it should have been thicker.  Oh well, you get the airplane you build, not the one you want!

Might be able to work those out using the technique outlined in Section 5.