727 no reverse, forward in neutral after rebuild

Howdy!
I have a 727 that was just rebuilt and put in my 71 duster, put in a cope reverse manual valve body and their billet reverse servo. The car even after the rebuild has no reverse gear and goes forward in neutral, I dropped the pan and adjusted the band, adjusted the shift linkage well, still no luck.

Before the rebuild a tf3 kit was done, I’m wondering if the governor and forward clutch plugs they have you put in that are still in the trans case would cause this issue or what the recommendation is.

Thanks!

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