I have a Comet Whizzer kit with the same controls. It was a way around the Jim Walker "U-Control" patent at the time. I can't imagine just how borderline out of control these models must have been. I had another 1/2A Comet kit as a kid called the Schmoe, or something like that, that used a wierd bell crank and a thin music wire pushrod that went through a small aluminum tubing back to the elevator. Another way to circumvent the patent and avoid royalties to Walker. If you examine the paper work, you might find that the model was designed by Carl Goldberg, who was working at Comet at that time.
Type at you later,
Dan McEntee