Nice project. They are good runners. I've added a link to an item
being sold by German Ebayer who is good for spare parts for German
engines. I've ordered vintage parts from him several times since
covid and all the purchases turned out well. Turn translate on so
you can read the listings and click on the category 'steam toys'.
One thing to be prepared for...the prices are steep no matter who
you buy from and his shipping prices are very fair.
https://www.ebay.de/itm/144267773425Give us some more pix,
Wayne