I'm there with you Tim!
New installs are rarely without some type of aggravation and we always end up owing the issue ourselves. I had issues when I buttoned up the new engine and installed the transmission here too. Used the wrong clutch fork and had to pull the transmission and bell while it was in the car & swap the Lakewood fork out with a GM fork. The only blessing was I have a 4 post lift in the garage and didn't have to work off the floor.
Hope this is the last bug you have to chase and you get to enjoy the car more when it's all finished up. It's a killer Nova for sure, and like Bruce...I really dig the look and the stance.