It is much thicker in the middle than my Winchester. I can't see a warp, but it looks like the flat area of the right edge was surfaced at an angle tilting toward the right. That edge hits first and this makes the right side sit higher. Since it is the match HI apparently original to the carbine, I going to just stop where I am with only about 1/2 of the front sight hidden. It also loosened up the guard which is good. When I look down the Winchester, the whole front sight is visible and you can see that it is much thinner in the center U cut. One thing is obvious on all of my carbines and that is not much lines up. The wood is tilted on all of them, but they all shoot dead on POA at 100 yds.
Thanks for your thoughts.