I'm taking a class that uses the plastic templates from a nationally know company. Almost every week our instructor, that has made the quilt, tells us to make a correction on our pattern. Now I'm a math person so I would notice that it should be 12 1/2" not 2 1/2" but what about the new person? I know we should read through but do we have to do the "math" also? I have had the same problem with my BOM it tells me to cut corner blocks at 8" and then attach a 6" strip. Those 8" blocks have applique on them can't be cut down - what do I do? Does anyone else have this problem with patterns?