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I'd talk to the vendor first. If they don't give you any help, then you go to Hart. The other worst case scenario is you have to pay for a rehone. Which isn't really a total loss.

And I...

Well the worst thing that can happen is they tell you no. The best thing to happen is they find out there really is a problem with your razor that you couldn't have caused. And provide the service...

My best advice would be to find someone who's got a good reputation in the forums as knowledgeable and able to hone. Send them the razor, and ask them to evaluate it for you. Since you tried to...