Not too sure on the carbs. It fires right up so i would think they aint too bad.
I don't even know what link and sync is

. Is that the carb linkage?
I had the throttle pushed down as far as it would go. What else is there to check?
Also, after the first run i took the doel-fins off the cavitation plate, only difference i noticed was it was a little more stable in turns with the fins on, otherwise i noticed no difference.