sorry for delay in replying, we were off line for 2 weeks or so. Note you are in Luxembourg, and we are in contact with Dr Henri Kugener in Lux. he may be able to help you more than us. He is in phone book I think, let us know how you get on. We have a language problem when contacting him so we don't have alot of contact.
Good luck.
from New Zealand John & Marion Towers