What’s the best way to plumb the side seam of pants? I don’t understand what I need to do. I haven’t been able to find any photos/sketches/instructions at the library or on the web. I know I need a fitting partner. Do I use a yard stick? Plumb line? A laser tool? Does anyone have detailed instructions what to do with the current seam if it is not perpendicular to the floor? My fitting partner knows less than I do. Help!