Yeah, but if its just the thickness it could be turned down on a lathe.A file/grinder may not be the most accurate way
i have heard of people filing down the teeth but it is difficult to get it to work because you would have to file down a perfect amount on either side of each tooth. Pardon my ignorance but what is a k-type nankai fc? Will this driver work on my technolite (the one with the chinese letters on it)?