I've used the services of a guy called Dave Beeby before, and he is awesome. Specialises in one-off RC parts, and the quality is just incredible. He also has good prices and is pretty quick, but the only downside is that he's here in the UK...so you'd have to ask him if he can ship internationally (though I don't see it being a problem - he's a really nice guy).
Here's his site:
FullOption.co.uk
Just blast him an email (link is under "Upgrade Parts") and I'm sure he can help you. Plus, he'll accept DXF drawings just fine.