I have been quilting for many years and I still struggled with getting the ends so come together properly until I tried the method shown in the Quiltmaker magazine. It's in their insert QM basic lessons. Here is a link to a completely machine sewn binding with a Faux piping on it and it's really neat.
http://tlcstitches.blogspot.com. She has a great tutorial on this and it really makes a quilt look great with that little extra piping. Give it a try and be sure and says thanks for the tutorial.