The latest listing I've seen shows no sales rep or rep company servicing this area. I believe it's being handled directly by Martin Archery. For that you may need to call the factory. Try customer service at 1-800-541-8902.
Sorry but I have to edit. Misread your post. The company is still a good source for info, but you can try Shawn Hatem on Archery Talk. Goes by the user name of NovRut. He's the staff shooter coordinator, or at least he was last year.
If You're Not Living on the Edge You're Taking Up Too Much Space
Martin/Rytera Staff Shooter
PSAA Life member, UBP Life member
PADI AOW Diver