After hand quilting an irish chain diagonally through all those little squares, I asked everyone I could think of about this. I can not do a decent stab stitch to save my life, you talk about crooked, oh my! I found one more way to deal with this problem, I hope I can explain it in such a way that it will make sense to you. When you come up through a thick part and don't like the large space between your last stitches, instead of continuing in the same direction, go back one stitch and rock forward normally just one stitch at a time until you are back to the normal thickness and small stitches. I was sure that it would result in double stitching on the back, but it doesn't. It is the only way I can get through seams. I will in the future be much more carefull in planning quilting designs to avoid seams. If this makes no sense to you let me know and I will try to find the book that will explain it better.