I went to use a 10x1.5 metric die today and I could not get it to start. Now I dont use dies or taps very often and the set I was using is a good quality one. This particular die I believe has not been used . Now I have got a few of those little draper type and had a 10x1.5 and lo and behold it started no problem. I torpedped the start and even ground a shaving off the rod but could not get the "good one" to bite. After I had ran a cuole of threads I retried the original and it ran and cut Ok. It is just the starting bit that does not work. Is there a sharpening type tool for dies?