i know RACE! in South Africa are the only after market tuners doing Gemballa ... i will contact one of the partners to find out if he knows anything about this ... assuming Uwe went on a business trip to SA
EDIT: spoke to the partners a second ago, both partners have heard of the story but have not been in contact at all with Uwe ... its a pity, was hoping i could help
hope there is a happy ending to all this ...