There is a particular angle the sear needs to be ground to. I’ll try to get pictures when things warm up. The first picture is close. Then the internal spring (next picture) that is from the safety to the sear needs to be stretched inward to an extreme to lighten its impact. Mark the spring end points on a piece of paper. Pull the ends into each other until you see a improved set. (Lighter sear pressure) Polish the sear and hammer contact point. Make certain the sharp edge of the hammer that makes contact to the sear is polished to an ever so slight soft edge. Else it will just scar the sear back to a heavier trigger pull. Polish all pins and holes. Polish the contact point between the trigger and sear. Lube all contact points. Lighten the trigger return spring. (picture 3) It takes everything imaginable but I get the triggers to about 2lbs, no creep and safe. I can’t take the credit for the grind angle on the sear. My used 392 steroid had about a nice 3lb trigger because someone did this angle grind. I then finished the trigger by doing everything else. They are a project but well worth the time. Borrowed picture.
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