I had one tuned and still didn't like it. Put a Timney in and it took some fitting of both the stock and the contact on the safety lever. Once I polished up the safety everything is good to go. I used the light spring and adjusted it for about 2 lbs. Not good with gloves on, so put the heavy spring in and backed it off to 2.5 lbs. and have not touched it since.
The original trigger may handle dirt better than the Timney but I would be concerned if it was an an amatuer job and no sear lee way. I know how screwed up it can get being an amatuer gun butcher.
I'll measure it when I get home, but I would say there isn't 0.010" left on the sear that holds it.
Edit: it's actually only 0.005"
