I went out the very first time with my M9-A1 and shot some pretty tight groups. I couldn't be more thrilled with this gun, it's excellent. Nice light trigger pull, not too much recoil, just fits in my hand. I have an observation and a question. I noticed right away that my first few shots were going high. I aimed lower and started bullseye-ing the target. My suspicion is that I was putting the white triangle in a position so that it actually filled the trapezoid. My eyes naturally did this, but when I look at the sight in that position, the point of the triangle is slightly above the top edge of the rear sight, which would explain why my shots were going high. So I'm reading a tip I received from the owner of the firearm training company called FrontSight, and he says you should black out the white part of the front sight because it causes you to aim high by distracting your eyes. This makes sense to me, and I suspect this is why my shots were going high, but I am hesitating to deface my brand spanking new gun-toy until I am sure this is wise. What do you guys think?