Transgo TF2 Installation A904

Digging up his old thread has helped me with installing the TF2 kit in my 727 valve body and I have a guestion regarding a check ball in the upper aluminum body.

Do I need to do anything with this check ball I can’t seem to find any info on it.View attachment 1715146091View attachment 1715146092

On the lower body where the passage was drilled do I delete the check ball in this location?
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Thanks!

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