A local smith offers a slicked up hammer for $20 at our local shows, I had 2 of mine done, one would not trip with all the weight he had brought with him to test trigger pull, the new one is around 3.3 lbs. He doesn't like to go below 3 pounds.
He has a box of triggers that he has worked on , he measures , swaps out and measures again to see the out come until he gets it down, my first rifle was one try, the second was two tries to get it down. I looked at the 2 sites offered here and it looks like the do a lot of fine work to really end up with a super trigger but I am happy with mine now. Best wishes, hope this helps.