My truck was way lean and ran awful. I had followed the directions that came with the manifold, calling for 3/4 turn opening on the idle screws. And opening the throttles a whole bunch so it would idle. It ran after a fashion. After opening the idle screws a turn and a half, I was able to close the throttles a bunch. Made all the difference.
I sure hope this straightens out for you. It looks so good, it should run that way as well.
