You want to talk about frustrated! Ugh. I feel like Lennie's Avatar!
I'm working with Simplicity 3796. I ever so carefully took my measurements 3 times. I was between two sizes, but since my waist is so stinkin' big I went with the larger size. I cut everything out a few days ago, and this morning at 10:30 I started to sew. Granted, it takes me a while to figure out what the instructions are saying. But I was determined to follow the directions, and not make it up as I went. I found a few problems when I did this, and had to recut 2 pieces, but that was ok. The front and back didn't match up, but I made it work. Then I saw how huge these things were! I took them in 3 inches and that made them look better, except for all the excess fabric I now had. So I just ripped out every seam and topstitch (I left the button holes). I'm going to recut it. By taking off 1.5 inches on the outside seams, it measures 3 sizes smaller. There is no way that I would be able to wear that size in another pattern. My original cuts were accurate, as I just used the largest size on the pattern. Dang, but I'm frustrated!