Call any of the big shops and see who has a distribution center local to the midwest.
You're Yamaha dealer can't get an oem one by the weekend?
If they can't, I'd assume they could get it from Parts Unlimited, they are in Wi.
Or Western Power Sports, not sure where they are
or any of the others. Call them, but don't wait till to late in the day. Most orders have to be in by 3:00 PM.