Trying to figure out a problem with an 06' Lbz. S-400 and new injectors with 60% nozzles were just installed. Truck will not fuel past 40mm3 at all. Also there are no codes related to this issue. Truck ran and ran well before this. Truck sounds and idles good, balance rates are also good. Watched actual vs. desired rail and that is also good. Any thoughts or ideas?