Do they have a conversion chart from precuts to yardage? I have a pattern I like, but it's designed for strips. And various colored strips to boot. I did buy a pack, but I simply don't want all those colors. So now I have to figure out what I do want where, and how much I need. That's a royal pain. I will buy separate fat quarters if I only need a little bit of a certain color, but I have yet to see a pack where I like more than 2 colors or patterns.