My son broke one of the four studs off the left rear hub of his DVX400 while changing tires, I can't fine anywhere to get just a replacment stud, everyone wants to sell me a whole new hub. The broke stud was easy to get out of the hub with a couple taps from a hammer. Seems to me it should be just as easy to put a new one in the same way. Anyone have an idea where I could find just the stud?