Full day today - 8-1/2 hours. Finished the construction of the aileron torque tube and the elevator pushrod mechanisms shown separately in the first picture and then with the pushrod in place in the second. As can be seen in the third photo, the control column pivots back and forward on a bolt passing through the aileron torque tube assembly and drives the elevator pushrod. The trim lever is connected to the front of the control column via the spring loaded assembly built earlier. The trim lever is tightened onto the aileron torque tube assembly with a leather washer between two large washers to provide a friction mechanism. There is no bush in the front of the torque tube to allow for the change in angle of the pushrod as the control column moves. There is a bush in the rear of the torque tube to provide a solid drive to the elevator. At the end of the elevator pushrod 
the coupling for the elevator is mounted on a free turning piece of tubing with welded segments fore and aft. This allow the drive to the elevator to work independent of the aileron drive. The aileron torque tube has two pivots front and rear. The front one is
also located with welded segments fore and aft. These two pivots are then welded to the underside of the fuselage as shown in the fourth picture. These pivots are a tight fit on the torque tube and with the inevitable distortion caused by welding to the fuselage they ended up binding on the torque tube. This was relieved by cutting though the bottom of the two pivot tubes opening a slight gap and then welding the slot to provide additional clearance. This has resulted in the control mechanism working freely but without any significant play. Others have constructed a bolted on arrangement to allow the control mechanism to be removed but like all "add-ons" this inevitably adds a little weight.
