Grundig Ocean Boy 820

[Wanderingfree]

            Hi Guys I am trying to sort out this radio. I think I have got every thing functioning. I have one slight problem and that is on the wave band selectors the front knob goes into a shaft extender. It's 30mm long female spline one end external spline the other end. The extension shaft is broken and I am trying to source one. Do any members have any idea where I can get one please?