I did everything that the installation instructions said to do, so yes I re leveled and zeroed in the concave. I put in the "wedge" as instructed. First bar on bottom grate set at .6 inches when first bar on non adjustable part of concave frame at zero as per instructions. I might add that I also installed a new Agco high wire concave at the same time. I had to shorten the concave adjustment rods quite a bit as per instructions and actually had to notch out a little bit on the cage frame to get the concave zeroed because of interference of the concave back support bars. Have talked to a few others that had this issue also. Not a big deal to fix but you would think Agco could have made things fit a little better than that. I am not familiar with F2 cylinder bars so that is why I asked how and where they are installed as per hyper mods.