I'm not sure what lines you're referring to, but nothing cleans brass like stainless steel pins with liquid cleaner in a rotary tumbler.
Still happily answering to the call-sign Peetza.
The problem, as you so eloquently put it, is choice.
He is no fool who gives what he can not keep to gain what he can not lose.
-Jim Eliott, paraphrasing Philip Henry.