Its been a good lesson for you to not play with the lenses. Its 500 dollars lens at keh com .

I researched the net and your address is the Nikon service. Contact with them , precision buy the parts from Nikon Japan and bring to US. It takes months and you have to pay %40 more than the Nikon. And if you dont use.Nikon at first try , after an second incident , Nikon refuses to repair.

Good luck,

Umut