Angel,
Another thing, I count 11 different motor packages under the TAGUSA rules. How many different types of carbs are there? I believe the reason jetting is open is to decrease the difficulty for the tech director. All the tech guy has to do is look inside the carb and visually inspect. It takes more time to take the carb off than it does to inspect for machining or polishing.
When you wrote “My thoughts and interpretation: IF Rotax carbs can have their slide, needles and all orifices classified as jetting, then remember that all other carbs will also be allowed the same modifications……what then?”
It is my opinion that this is already the case.
Tom