Now that the rudder servo is firmly mounted, the model is upside down. Installed the rotating pins for tailerons. This area is very well built and reinforced with carbon fiber cloth and brass bushings for support. The rotating pin is solid carbon rod glued into the brass tube. I cleaned out the bushing before assembly with a solvent and Q tips and applied a light lubricant. Slides right in. Rock solid, very strong, and zero play.