The Kitchen Rudder:
Not to hard once you understand the basics.
For mine there are 4 shafts: The rudder stuffing box, the tube that is used to control the right rudder shell, the tube to control the left rudder shell then there is a floating shaft. all are telescoping. There are two servos used, one that is mounted on the floating shaft that pulls or pushed the two shells apart or together then the other servo is used in controlling the right to left motion as used on a typical rudder. It is hard to visualize, but it works very well. Question would the folks on this forum like me to open a kitchen rudder post? I can dig up some drawing, tke some photos and try to post a you-tube video?