I spend a LOT of time in that area when I assemble these carburetors. About 8 out of 10 times the hanger arms are bent from the last rebuild, so we need to make sure they are level and exactly even. I simply bend the arms as close to level as possible, then bring the rod tips together to make sure they are exactly even. This take some time, but is a requirement when building these carburetors, especially for the later APT models.....Cliff