The 3D models would be super handy.... Might be able to do a share this among myself and another couple of machinists... But as usual It's all about costs - drawings are good but the models would help clarify a few bits. Also, there might have to be small changes due to mostly huge costs involved in not ( first thoughts )..
You might want to take the drawings down from the thread - there is still a chance you could get this made yourselves... Don't give up till all options are dead. How would y'all feel if someone took these drawings, got them made then made a fortune..??
Jim