[tdyltc66]

Thanks for the replies Larry and Dan. I new I could count on the Cobra guys for the answer. That's it exactly; that explains the mystery of the two little "brass" pieces. I am not sure why there are two little "brass" seals though; it seems like one would do. Maybe one goes on each side of the felt washer. Speaking of the washer, I wondered what that little white washer in the rebuild kit was for. The clip to retain the two seals is in tact on my carburetor so I guess I got lucky there. Larry, you are correct; my carb was not original to the Mustang 289. It was originally used on the 1964 Ford Galaxy 352. Which would have had an automatic choke. Fortunately, I don't believe any modifications were made to the carb. (other than the manual choke). Everything is in tact and appears original, according to pictures I have seen. As far as the check ball goes, I put it back together the way I found it: without the check ball.