New Chuck, excessive runout

One thing to keep in mind while truing a chuck is to tighten the jaws with the same screw during the whole process. My cheap ($ 100) bread and butter China chuck RO is no more than half a thou if I use the same and best screw. The others are up to 1+ thou. So it doesn't really matters which to use but I've marked the best screw so I can use it if I want. This chuck is however not High Quality so I don't expect it to remain stable over time.
 
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