Thanks for the part number. I didn't realize there were separate Sams for cabinets & whatnot.
In the following photo, the (incorrect) fine tuner is at the very top. The slightly larger knobs are in a row of four at the right bottom of the chassis: horizontal hold, vertical hold, contrast, tone. The two in the middle are original, a honey-ish clear color that matches the bigger knobs farther up. The two on the ends of that row are non-matching replacements:
The lower knobs are this size and shape; I want clear ones, of course:
Here's the fine tuner I'm currently using in my other CTC-11 (with wood cabinet):
Wrong color for that TV, but it fit -- after I shaved the shaft down. That cabinet has a small bezel for the fine tuner knob, held in the cabinet with a spring, the kind of thing that's easily lost.
The fine tuner shaft is thinner than the shafts of the four bottom controls, and its body is longer.
The fine tuner actually does something. In the next photo, it's the bottom-most shaft. It's spring-loaded and it engages smaller gears on the tuner front when you push it in.
Probably too much information, but there you are.
Phil Nelson