Here a a photo of the final product.
It took 4 prints to get it to work.
The first, red one was too short for the spring assembly, the second one, beige one, I changed the filament type and the temperature was too low and the lever arm separated. The third one, black and probably beige also, when I adjusted the height, it changed the thickness of the center port and it failed. Every time you adjust something you have to check what else changed.
Jim Altmiller