I removed everything and started from scratch installing the main jets, secondary jets, metering rods and step up springs that the carb book chart showed they WOULD have had out of the box.....if not for the "suppliers" custom Hemi calibration. When it came off the dyno...it had the stiffist spring in.....that went bye-bye as I re-installed the middle (orange) springs in both carbs .
hope your rear end checks out with only needing minor repair/ adjustment.