Newbie carb 1945 rebuild questions

The best running 1945 I've ever had, I had to put together from 2 or 3 different salvage 1945s. The next best one I gave the throttle body to a buddy of mine back when he worked in the tool room at a factory, he reamed out the casting and rebushed the throttle shaft on it. On my current /6 a replaced the 1945 with a BBD and matching manifold