I am in the process of having my injectios rebuilt and the guy said they are larger nozzels than the stock ones. I do not have a turbo and was noticing quite a bit of black smoke on acceleration and when pulling grades. Should I have him put them back to stock or keep them big? He said 2 of the 6 were not functioning right(200psi) off from the rest and they were dirty. Also I need a part # or source in California or close besides Specter(None in stock) for the copper crush gasket that goes on the end of the injector.