A new MZ importer and spares supplier has been appointed in the UK. They are Graham's Motorcycles in Taunton http://www.grahamsmotorcycles.com/index.htm
I spoke to them this morning and they'll be able to supply spares for the Yamaha, 125 and 1000cc fourstroke models, but not 2 strokes or Rotax engined. They are in the process of setting up an Ebay shop so you can order spares on line, take PayPal, and will accept orders from around the world. They have parts books for the 125 and 1000 models as .pdf files and these will be available soon as downloads from their site. If you've got a Skorpion it would be a lot easier if you used part numbers from the parts book available here: http://www.mzregalia.com/page4.htm
Norman
http://www.mzskorpion.net/index.htm