Here you go. Don's a good guy and I had a great experience with him when my MD had a glitch, but FWIW I wouldn't contact him until you've run your problem past HQ. Especially if your gear is still under warranty, I suspect Don will need to hear from them before he makes any repairs. They're busy at HQ but don't worry, they will get back to you.
1-770-845-9617
Don Hassler/Elektron USA Service
Address line 1:# 270
Address line 2: 375 Rockbridge RD. NW Suite 172
Lilburn, GA 30047