Looking for slotted fillister head screws for the blade in a Ruger Mini 30 rear sight. Calling Ruger just got me the "buy the whole sight" discussion. They didn't even want to talk about just two screws. Anyone have a place to order some? They mic .072 diameter and have 80 TPI by 1/8 long (under the head). Anyone have a place where they can be ordered? If not, I'll just have to drive around to the gun shops and see what I can scrounge up? Looking for 2 blued. Thanks.