I have a Set of Cb450 Cl450 Carbs Plus one Extra Left Side Carb. These carbs were taken apart and ultrasonic cleaned. The jets had never been tampered with, and one of the carbs had a spotless bowl. The gaskets are good on the top and bottom, and the slides freely move. The worst thing about the carbs is that there is some minor wear on the bodies, but nothing severe. The extra left side carb has a different number on it, but is exactly the same as the other two. There is some pitting on the intake boot side, and should work fine. 

Thanks,

Nick