VKB-SIM

You should add a brake/lock button to your NXT spring rudder twist inserts. Just a button near or in the same hole as the pinky button; pressing it locks & pressing again unlocks. It would make trimming the rudder possible while cruising to and from target even for planes without trimmable rudders.

Existing NXT grips could be modified by removing the pinky button if you exploit that hole for sticks already purchased. No one provides that feature, yet...