Theres a good Chance that u just Striped the Spline on the Hub or Sproket because the spline on the Hub or Sporket is not as hardend as the axel but theres also a slight chance is that the axel might keep doing it over and over again because its warn just enough to do it. When i striped the Hubs on my old Trail Boss id put new ones on and it was strip them with in a month
k thanks tomm were gonna tear it down and see im kinda hoping its the axel lol then i have a excuse to get the dura lol but then i wont be riding for a while but who knows