we had another thread on binding, and an expert said they left their batting a little longer than either the top or bottom, so that it 'stuffed' the binding. I can appreciate the point, however how do you do that. I square everything up after quilting, and run my rotary blade along the edge, cutting thru all the layers nice and crisp.....how would you cut the top and bottom, but leave the batting long ????? that is a mystery to me....