Hey everyone. Wondering if anyone can recommend what next. Recently started getting codes P026B, and P020B,C,sometimes D. They come in randomly. Truck is 2014 6.7. Completely stock. They are injector codes but just going through everything I’ve changed fuel filters, checked injector harness, ohm’d injectors, checked transfer pump fuel flow. Everything is checking out. Just wondering if I am possibly missing something before I pull out the credit card. Cheers.