dang injector

[hoborobot69]

so I recently replaced my nozzles with monarks, at first three were leaking from the top of injector to the lower of the injector threads, not the injector to head threads. I removed them recleaned and replaced two kept leaking I pulled them cleaned and swapped lower fittings on them but kept the lowers relative to thier place in the head. One still leaked, pulled a not leaker and the leaker again swapped the lowers keeping them relative. The same one continues to leak through the threads. I plan on going to the junk yard to find an injector that doesn't leak, good plan? Input? Critique?