I have some special wheel studs that are 5/18-18 thread. They do not make another stud that will work for my custom application, but the 5/8 thread is too big. I was wondering if it's possible to turn them down and put 9/16-18 thread on them? If so I have 32 that I need done. Below is the pic and I would need the threads to all the way to the splined part.