Converting from Manual VB to stock?

I recently bought a 72 duster that has a 360/727. The previous owner bought a used transmission with unknown specs except it has a manual VB. The car is just a street car so I bought a stock VB that was rebuilt by A&A.

I put it in the transmission over the weekend along with a Bouchillon kickdown cable. I bought the whole kit along with all brackets needed. After the swap, and playing with the adjustment for hours, I have what appears to only be reverse and second gear. I can not get the car to start in first, or shift into third gear no matter what I do.

I'm not well versed in transmissions, so I was wondering if I missed something? Is there another component that would go into swapping this back to a stock valve body that I'm missing?

I've got another 727 that I can swap into the car. But I just wondered if there are any other steps I should take before I drop the trans.