Me too - always cut lengthwise grain and I measure the center of the quilt with a tape measure. Then, I cut a length of border a couple of inches longer than that measurement (across the center of the quilt) and then use the border to measure itself by laying it across the center of the quilt and then cut the exact measurement. I hope I said that clear enough??? Anyway, that technique I saw on a program featuring Jinny Beyer and it sure works for me. Oh, and I use tons of pins, both ends first, then the middle and everywhere in between. And if you still have a wavy border, then hang it high and keep it moving :)...