Hi

So when I stick my nikon 70-300mm VR on my camera all is good until the VR mechanism starts to shake pretty violently and in the viewfinder I can see the image shaking pretty erratically!!!
Not happy because I love this lens, absolute beauty!
Has anyone got any idea what this is?
And better still any idea how much it will cost to fix? Am I better going to Nikon directly or an independant repair centre?

Cheers
Jonty