when you test for push off be careful. if you push to hard you can roll over the contact point between the hammer and trigger. when you cock to single action push on the hammer spur with your thumb only to the point you thumb nail starts to turn white. if it doesnt push off you are ok. if it does you can probably sharpen the trigger. the case hardening if very shallow so you can't stone it very much or it will break through the case hardening to the soft interior.
