James Brown, who is based in the UK is building a 133 Jungmeister and has been using a combination of CAD and an online, remote engineering company to make the parts. James is willing to share the CAD files with anyone that is interested. The drawings were produced with AutoDesk Fusion and the manufacturing was done by HD Prototypes. https://www.hdprototypes.com/ James says thier quality is excellent.
Email me if you would like more information.