Measuring showed a need for a little more clearance between the master cylinder and the upper rod for this rudder pedal set. The master cylinder in question is mounted on the first rudder pedal set already completed. I added a approximately .25" depth and 1.5" long curved recess to the back of this tube set. This is better seen in the photo. The tube was cut away with a grinder and a small piece of steel was mig welded in place. A flap wheel was used to shape the finished area. This recess will clear the fitting for the remote filling of the master cylinder.