Hey guys, I understand your frustration.
I normally do not promote any products other than my own.
Here is a machine shop I deal with. both the owner (David) and one other guy (Bill) that works there are modelers.
They already make custom wheels and tires for RC along with heli parts. They can make just about anything and their machining skills are Top Notch. here is the web address,
www.davincimachining.com
They are located in the St. Petersburg Fl. area.
The owners name is David Padovan with Bill Bagwell the Process Engineer.
They are always there and will return a phone call.