Gear Knob thread dilema

[jase4072]

So, after searching the forum for the thread size I opted to follow the M12 X 1.25 advice. It turned out to be the wrong choice as I actually have the M10 x1.25 thread .. Grrrr. I now have a rather cool Top Secret billet gear knob all the way from Japan sitting on the shelf whilst I work out where to find a thread adaptor. I did think about sending it back and exchanging it but its not how the company operates so I need to adapt and overcome. Any ideas where I can get a thread adaptor.