The Scor Envi is a great idea. I've tried to make a 4x6 envelope and it does not come out equally balanced on each side. There is a tiny bit of triangle to cut on one side and a big triangle to cut out on the other side. The Scor Envi says to score at 2 3/4 and 9 1/4 and the second score is at 4 and 8 1/2. That seems out of balance as it doesn't fold well. Are the score lines correct?