It sounds from your post like the previous owner was inside the carbs at some point, cause if the leaf springs aint there, someone left them out. They aren't factory options, but actually hold pressure on the "pressed in" main jets to keep them in place. The main jets have o rings on them where they press into the center of the carb body, and have what's known as "emulsion tubes" located furthur up inside the carb body, visible only after main jet has been pulled, The other jet, the one with the slot, is the idle jet, which is threaded and unscrews. As for throttle link parts, they are probably very difficult at best to find new anymore. The parts list should show you what goes where, but it may still be dificult
to figure out, especially if you're a novice. You may want to get on ebay and find a COMPLETE AND UNMOLESTED rack of carbs from a seller with a good feedback score/reputation and once you've obtained a set, you can note how everything is put together. It'll save you a big headache trying to figure if anything's missing or out of place. After that, you can ask the carb gurus here questions about the correct way to rebuild and set up your carbs.
