Is it ok to mix different fuel injectors (brands) just as long as they all have the same fuel rate (19#)? I'm trying to buy a set of used injectors but one of the injectors has a broken pintle cap. Instead of replacing all my injectors, I'm wondering about just using a few of the "used" set to replace a few of my leaking injectors (leaking b/c the injector is broken....not an o-ring).