De Rosa SK front fork availability

Hi Road Lords!  I have recently discoverd my SK front forks have begun to collapse.   There is significant movement where the stearer conncts tothe crown. I can not find any replacements anywhere.  Any idea where I can source one?  No reply from DE Rosa in Italy so far.  No suitable second hand ones on ebay ( I notice a few frames being sold without forks so suspect this is  a common issue).  Thanks for any light that can be shed.  J