Do you have the Junior?
What way has it given up the ghost?
I pick one up on the cheap but it took half a Sunday to clean and repair. One of the repair was doser. It was very stiff and sometimes wouldnt return. While the bottom plate of the doser was off I put a bit Inox (WD40) on it and it was good as new!
If you can give a bit more info I and others might be able to help ;D