So I put the Timney in the other day and it was a pain in the azz. I've done about 5 Timneys in these m1917's and they were drop in and a little stock relief and you were golden. This rifle has the Dayton Traister (I believe) speed lock cock on open kit and the cocking piece is different than the original military one. I had to modify the sear on the Timney to get the bolt to open after you pull the trigger. It works like a million dollars now though and is completely safe. Safety works great, it's all adjusted to 2.5 pounds and will make an improvement over the 4.5 pound gritty pull of the military trigger that was in it. I'll shoot it this weekend and see how much the groups shrink. I know it's going to make a huge difference in field positions/hunting as well as paper punching.
