Nice easy print, you can add as many levers as you want. The original lever handles were a little thin and flexed so I made them a little thicker than the original plan. It did not cause an issues with the size of the slits in the covers, no other mods were needed. Made some handles in Blender. Functions well, Nice expandable design I am going add some switches at the bottom. Works good easy print. Might add two more levers but joystick encoder only supports 4 levers. You could put switches at top and bottom of additional levers to act as the trigger for things like spoilers, and thrust reverser.